315640939572 has 54 divisors (see below), whose sum is σ = 928134672738. Its totient is φ = 90183125088.

The previous prime is 315640939543. The next prime is 315640939577. The reversal of 315640939572 is 275939046513.

315640939572 is a `hidden beast` number, since 3 + 1 + 5 + 64 + 0 + 9 + 3 + 9 + 572 = 666.

It can be written as a sum of positive squares in only one way, i.e., 310768341156 + 4872598416 = 557466^2 + 69804^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315640939577) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 89465623 + ... + 89469150.

Almost surely, 2^315640939572 is an apocalyptic number.

It is an amenable number.

315640939572 is an abundant number, since it is smaller than the sum of its proper divisors (612493733166).

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

315640939572 is a wasteful number, since it uses less digits than its factorization.

315640939572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178934797 (or 178934785 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 54.

The spelling of 315640939572 in words is "three hundred fifteen billion, six hundred forty million, nine hundred thirty-nine thousand, five hundred seventy-two".