72090757512 has 56 divisors (see below), whose sum is σ = 202662562590. Its totient is φ = 24030250560.

The previous prime is 72090757483. The next prime is 72090757547. The reversal of 72090757512 is 21575709027.

72090757512 is a `hidden beast` number, since 72 + 0 + 9 + 0 + 7 + 575 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 68619898116 + 3470859396 = 261954^2 + 58914^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 6174789 + ... + 6186452.

Almost surely, 2^72090757512 is an apocalyptic number.

72090757512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

72090757512 is an abundant number, since it is smaller than the sum of its proper divisors (130571805078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72090757512 is a wasteful number, since it uses less digits than its factorization.

72090757512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12361265 (or 12361246 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 45.

The spelling of 72090757512 in words is "seventy-two billion, ninety million, seven hundred fifty-seven thousand, five hundred twelve".