57547923920 has 20 divisors (see below), whose sum is σ = 133798923300. Its totient is φ = 23019169536.

The previous prime is 57547923887. The next prime is 57547923971. The reversal of 57547923920 is 2932974575.

57547923920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 15778374544 + 41769549376 = 125612^2 + 204376^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359674445 + ... + 359674604.

It is an arithmetic number, because the mean of its divisors is an integer number (6689946165).

Almost surely, 2^57547923920 is an apocalyptic number.

It is an amenable number.

57547923920 is an abundant number, since it is smaller than the sum of its proper divisors (76250999380).

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

57547923920 is a wasteful number, since it uses less digits than its factorization.

57547923920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719349062 (or 719349056 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 57547923920 in words is "fifty-seven billion, five hundred forty-seven million, nine hundred twenty-three thousand, nine hundred twenty".