57720534764 has 24 divisors (see below), whose sum is σ = 106172101728. Its totient is φ = 27403967360.

The previous prime is 57720534749. The next prime is 57720534779. The reversal of 57720534764 is 46743502775.

It is an interprime number because it is at equal distance from previous prime (57720534749) and next prime (57720534779).

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, 2277167 + ... + 2302374.

It is an arithmetic number, because the mean of its divisors is an integer number (4423837572).

Almost surely, 2^57720534764 is an apocalyptic number.

It is an amenable number.

57720534764 is a deficient number, since it is larger than the sum of its proper divisors (48451566964).

57720534764 is a wasteful number, since it uses less digits than its factorization.

57720534764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579705 (or 4579703 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 50.

The spelling of 57720534764 in words is "fifty-seven billion, seven hundred twenty million, five hundred thirty-four thousand, seven hundred sixty-four".