57144605656 has 64 divisors (see below), whose sum is σ = 121485772800. Its totient is φ = 25056345600.

The previous prime is 57144605549. The next prime is 57144605699. The reversal of 57144605656 is 65650644175.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155265 + ... + 372016.

It is an arithmetic number, because the mean of its divisors is an integer number (1898215200).

Almost surely, 2^57144605656 is an apocalyptic number.

It is an amenable number.

57144605656 is an abundant number, since it is smaller than the sum of its proper divisors (64341167144).

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

57144605656 is a wasteful number, since it uses less digits than its factorization.

57144605656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527360 (or 527356 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 57144605656 in words is "fifty-seven billion, one hundred forty-four million, six hundred five thousand, six hundred fifty-six".