There are 15 zeros following the one in 1 quadrillion. There are three zeros per every thousand and six zeros per every million. A quadrillion is a thousand trillion, which means it has three zeros for the thousand plus ... More »

According to the list of approved metric prefixes, a quintillion comes after a quadrillion. A quintillion is a cardinal number represented in the United States by 1 followed by 18 zeros, and a quadrillion is a cardinal n... More »

www.reference.com Math Arithmetic

The smallest number that is a larger magnitude than a trillion (1012) is a quadrillion, which is equal to 1015. A quadrillion is also known as a billiard by its formal European name. More »

The unit that comes after trillion is a quadrillion, which is equivalent to 1,000 trillions. Numbers greater than 1,000 change units every three decimal places, equivalent to multiplying the base unit by 1,000. For examp... More »

The smallest number that is a larger magnitude than a trillion (1012) is a quadrillion, which is equal to 1015. A quadrillion is also known as a billiard by its formal European name. More »

There are two different scales to describe the number of zeros in a billion; the long scale has 12 zeros and the short scale has nine zeros. The long scale is common in Europe and South America, while the short scale is ... More »

www.reference.com Math Numbers

The number "one million" has six zeros after a one and before the decimal point. It is written out like this: "1,000,000." This is true in both the short-scale and long-scale naming systems. More »