57115661660 has 24 divisors (see below), whose sum is σ = 119954622480. Its totient is φ = 22844029824.

The previous prime is 57115661657. The next prime is 57115661723. The reversal of 57115661660 is 6616651175.

It is a congruent number.

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, 78176 + ... + 346904.

It is an arithmetic number, because the mean of its divisors is an integer number (4998109270).

Almost surely, 2^57115661660 is an apocalyptic number.

It is an amenable number.

57115661660 is an abundant number, since it is smaller than the sum of its proper divisors (62838960820).

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

57115661660 is a wasteful number, since it uses less digits than its factorization.

57115661660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279365 (or 279363 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 57115661660 in words is "fifty-seven billion, one hundred fifteen million, six hundred sixty-one thousand, six hundred sixty".