What comes after a quadillion?

Answer 1

After Quadrillion, Quadrillion x 1000 = Quintillion, Quintillion x 1000 = Sextillion, Sextillion x 1000 = Septillion, Septillion x 1000 = Octillion, Octillion x 1000 = Nonillion, Nonllion x 1000 = Decillion, Decillion x 1000 = Undecillion, Undecillion x 1000 = Duodecillion, Duodecillion x 1000 = Tredecillion Tredecillion x 1000 = Quatoradecillion.

Add the suffix "th" to any of the numbers above to ascribe a fraction of a given value (mile, meter, gallon, gram, etc.)

Examples:

A nanometer is a billionth of a meter and also a trillionth of kilometer. A mile is just approximately a sextillonth of a lightyear.

Answer 2

a decillion, if you concerntrate on the first couple of letters in all these "big" numbers (QUADillion,DECIllion), you find that they spell out latin meanings for what we would call four and ten.