72757105320 has 64 divisors (see below), whose sum is σ = 218336497920. Its totient is φ = 19396100864.

The previous prime is 72757105319. The next prime is 72757105363. The reversal of 72757105320 is 2350175727.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320737 + ... + 498383.

It is an arithmetic number, because the mean of its divisors is an integer number (3411507780).

Almost surely, 2^72757105320 is an apocalyptic number.

It is an amenable number.

72757105320 is an abundant number, since it is smaller than the sum of its proper divisors (145579392600).

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

72757105320 is a wasteful number, since it uses less digits than its factorization.

72757105320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181074 (or 181070 counting only the distinct ones).

The product of its (nonzero) digits is 102900, while the sum is 39.

The spelling of 72757105320 in words is "seventy-two billion, seven hundred fifty-seven million, one hundred five thousand, three hundred twenty".