15 zeroes
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One quadrillion = 1,000,000,000,000,000There's 15 zeroes in one quadrillion.
The number five quadrillion will have approximately 15 zeros.
One quadrillion = 1,000,000,000,000,000 = 1 × 1015, thus 15 zeros.
One quadrillion
Quadrillion definition1. a cardinal number represented in the U.S. by 1 followed by 15 zeros,and in Great Britain by 1 followed by 24 zeros.