56777505121164 has 48 divisors (see below), whose sum is σ = 133704541887840. Its totient is φ = 18751042736640.

The previous prime is 56777505121147. The next prime is 56777505121177. The reversal of 56777505121164 is 46112150577765.

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, 19923544 + ... + 22594304.

It is an arithmetic number, because the mean of its divisors is an integer number (2785511289330).

Almost surely, 2^{56777505121164} is an apocalyptic number.

It is an amenable number.

56777505121164 is an abundant number, since it is smaller than the sum of its proper divisors (76927036766676).

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

56777505121164 is a wasteful number, since it uses less digits than its factorization.

56777505121164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687130 (or 2687128 counting only the distinct ones).

The product of its (nonzero) digits is 12348000, while the sum is 57.

The spelling of 56777505121164 in words is "fifty-six trillion, seven hundred seventy-seven billion, five hundred five million, one hundred twenty-one thousand, one hundred sixty-four".