https://en.wikipedia.org/wiki/Names_of_large_numbers

This article lists and discusses the usage and derivation of names of large numbers, together .... Some names of large numbers, such as million, billion, and trillion, have real referents in ... that it was no more than "one thousand myriad of the eighth numbers" (1063). .... 10, 5, 1033, Decillion, Thousand quintillion, Quintilliard.

https://www.thoughtco.com/zeros-in-million-billion-trillion-2312346

Jan 20, 2019 ... Numbers of Zeros in a Million, Billion, Trillion, and More ... Thousand: 1000 (3 zeros) ... Quintillion 1,000,000,000,000,000,000 (18 zeros)

http://www.statman.info/conversions/number_scales.html

1,000,000,000,000,000,000,000,000, yotta, Y, Septillion, Quadrillion. 1,000,000,000,000,000,000,000, zetta, Z, Sextillion, Thousand Trillion/Trilliard.

https://faculty.math.illinois.edu/~castelln/prillion_revised_10-05.pdf

But where do we go from million? After a billion, of course, is trillion. Then comes quadrillion, quintrillion, sextillion, septillion, octillion, nonillion, and decillion.

https://www.quora.com/What-comes-after-a-million-billion-trillion

thousand 1,000 1 million 1,000,000 2 billion 1,000,000,000 3 trillion 1,000,000,000,000 4 quadrillion 1,000,000,000,000,000 5 quintillion ...

https://www.druide.com/en/reports/millions-billions-and-other-large-numbers

The short scale uses the same names (billion, trillion, quadrillion, etc.) but assigns different values to them, with one billion equalling a thousand million, one ...

http://mathforum.org/library/drmath/view/59164.html

Aug 29, 1996 ... ... use different names): 1,000 thousand 1,000,000 million 1,000,000,000 billion 1,000,000,000,000 trillion 1,000,000,000,000,000 quadrillion ...

https://www.britannica.com/topic/large-numbers-1765137

The American system of numeration for denominations above one million was ... such as billion or thousand millions that frequently differ from system to system. ... the preceding one (one trillion = 1,000 billions; one quadrillion = 1,000 trillions).