72868686864570 has 96 divisors (see below), whose sum is σ = 194186834749440. Its totient is φ = 18951887848320.

The previous prime is 72868686864461. The next prime is 72868686864587. The reversal of 72868686864570 is 7546868686827.

72868686864570 is a `hidden beast` number, since 7 + 2 + 8 + 6 + 8 + 6 + 86 + 86 + 457 + 0 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 72868686864570.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53352861 + ... + 54701600.

It is an arithmetic number, because the mean of its divisors is an integer number (2022779528640).

Almost surely, 2^{72868686864570} is an apocalyptic number.

72868686864570 is an abundant number, since it is smaller than the sum of its proper divisors (121318147884870).

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

72868686864570 is a wasteful number, since it uses less digits than its factorization.

72868686864570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108054660 (or 108054657 counting only the distinct ones).

The product of its (nonzero) digits is 10404495360, while the sum is 81.

The spelling of 72868686864570 in words is "seventy-two trillion, eight hundred sixty-eight billion, six hundred eighty-six million, eight hundred sixty-four thousand, five hundred seventy".