521874307316572 has 48 divisors (see below), whose sum is σ = 1073205952376320. Its totient is φ = 217362205000512.

The previous prime is 521874307316503. The next prime is 521874307316653. The reversal of 521874307316572 is 275613703478125.

It is a self number, because there is not a number n which added to its sum of digits gives 521874307316572.

It is a congruent number.

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, 292322928 + ... + 294102775.

Almost surely, 2^{521874307316572} is an apocalyptic number.

It is an amenable number.

521874307316572 is an abundant number, since it is smaller than the sum of its proper divisors (551331645059748).

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

521874307316572 is a wasteful number, since it uses less digits than its factorization.

521874307316572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586426610 (or 586426608 counting only the distinct ones).

The product of its (nonzero) digits is 59270400, while the sum is 61.

The spelling of 521874307316572 in words is "five hundred twenty-one trillion, eight hundred seventy-four billion, three hundred seven million, three hundred sixteen thousand, five hundred seventy-two".