100
*EDIT* to the idiot who said 100, you would have 100 billion. to put it in ways to understand, if you had 999 billion, just add one more billion and you have quadrillion, and you would need 1 quadrillion past 999 quadrillion to reach quintillion. so... many many many billions
one tenths hundredths thousandths millions billions trillion quadrillions quintillion's
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
1 quintillion would be 1,000,000 trillion.
1 quintillion would be 1 million million million.
One trillion million gallons = 1 quintillion gallons
18.
18
1,000,000,000,000,000,000
18
Billion has 9, Trillion has 12, Quadrillion has 15,Quintillion has 18 .