57213331664 has 20 divisors (see below), whose sum is σ = 114426664320. Its totient is φ = 27683869920.

The previous prime is 57213331613. The next prime is 57213331691. The reversal of 57213331664 is 46613331275.

57213331664 is an admirable number.

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, 57674234 + ... + 57675225.

It is an arithmetic number, because the mean of its divisors is an integer number (5721333216).

Almost surely, 2^57213331664 is an apocalyptic number.

It is an amenable number.

57213331664 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57213331664 is a wasteful number, since it uses less digits than its factorization.

57213331664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115349498 (or 115349492 counting only the distinct ones).

The product of its digits is 272160, while the sum is 41.

The spelling of 57213331664 in words is "fifty-seven billion, two hundred thirteen million, three hundred thirty-one thousand, six hundred sixty-four".