I think its 18 now?
quintillion
81,000,000,000,000,000,000
The next set of numbers after trillion are quadrillion and quintillion
1818 zero's are in a quintillion.
There are eighteen zero's, just like 1 quintillion.1 quintillion: 1,000,000,000,000,000,00013 quintillion: 13,000,000,000,000,000,000
Quintillion has eighteen zeros. 1,000,000,000,000,000,000
If you allow for zeros, that's 10^16, which is ten quintillion, or 10,000,000,000,000,000. If not, it's 9^16, which is 1,853,020,188,851,841, or 1.85 quintillion. (1.85x10^15)
1 quintillion would be 1,000,000 trillion.
In the short scale naming system for large numbers, it is one quintillion.
One trillion million gallons = 1 quintillion gallons
1 quintillion would be 1 million million million.
Numbers larger than 999,999,999,999,999,999,999 include 1,000,000,000,000,000,000,000 (ten quintillion), 1,000,000,000,000,000,000,001 (ten quintillion one), and 1,000,000,000,000,000,000,000 (one sextillion). These numbers can be continued indefinitely by adding one or more to any of them, or by multiplying by larger powers of ten.