Either 1,000,000,000,000,000,000,000,000 or "one septillion."
One septillion.
100000000000000
1072
99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
Ten decillion.
One septillion.
One septillion.
1000000000000000000000000
One septillion dollars.
One yotta-meter
4300.
It equals 100,000,000,000,000,000,000,000,000,000 nonillion.