56577460777 has 16 divisors (see below), whose sum is σ = 60228645120. Its totient is φ = 53032161600.

The previous prime is 56577460769. The next prime is 56577460781. The reversal of 56577460777 is 77706477565.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56577460777 - 2³ = 56577460769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56577460787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302452 + ... + 452362.

It is an arithmetic number, because the mean of its divisors is an integer number (3764290320).

Almost surely, 2^56577460777 is an apocalyptic number.

It is an amenable number.

56577460777 is a deficient number, since it is larger than the sum of its proper divisors (3651184343).

56577460777 is a wasteful number, since it uses less digits than its factorization.

56577460777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150264.

The product of its (nonzero) digits is 60505200, while the sum is 61.

The spelling of 56577460777 in words is "fifty-six billion, five hundred seventy-seven million, four hundred sixty thousand, seven hundred seventy-seven".