52656865728 has 56 divisors (see below), whose sum is σ = 140176105728. Its totient is φ = 17444595456.

The previous prime is 52656865711. The next prime is 52656865733. The reversal of 52656865728 is 82756865625.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809976 + ... + 872567.

Almost surely, 2^52656865728 is an apocalyptic number.

It is an amenable number.

52656865728 is an abundant number, since it is smaller than the sum of its proper divisors (87519240000).

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

52656865728 is a wasteful number, since it uses less digits than its factorization.

52656865728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682721 (or 1682711 counting only the distinct ones).

The product of its digits is 48384000, while the sum is 60.

The spelling of 52656865728 in words is "fifty-two billion, six hundred fifty-six million, eight hundred sixty-five thousand, seven hundred twenty-eight".