56577220406 has 32 divisors (see below), whose sum is σ = 101090316288. Its totient is φ = 23237370720.

The previous prime is 56577220397. The next prime is 56577220423. The reversal of 56577220406 is 60402277565.

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, 588125 + ... + 677528.

It is an arithmetic number, because the mean of its divisors is an integer number (3159072384).

Almost surely, 2^56577220406 is an apocalyptic number.

56577220406 is a deficient number, since it is larger than the sum of its proper divisors (44513095882).

56577220406 is a wasteful number, since it uses less digits than its factorization.

56577220406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265796.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 56577220406 in words is "fifty-six billion, five hundred seventy-seven million, two hundred twenty thousand, four hundred six".