57720632164 has 12 divisors (see below), whose sum is σ = 108781191484. Its totient is φ = 26640291744.

The previous prime is 57720632159. The next prime is 57720632213. The reversal of 57720632164 is 46123602775.

It can be written as a sum of positive squares in 2 ways, for example, as 25587201600 + 32133430564 = 159960^2 + 179258^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57720632164.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555006027 + ... + 555006130.

Almost surely, 2^57720632164 is an apocalyptic number.

It is an amenable number.

57720632164 is a deficient number, since it is larger than the sum of its proper divisors (51060559320).

57720632164 is a wasteful number, since it uses less digits than its factorization.

57720632164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110012174 (or 1110012172 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 57720632164 in words is "fifty-seven billion, seven hundred twenty million, six hundred thirty-two thousand, one hundred sixty-four".