56577368591 has 2 divisors, whose sum is σ = 56577368592. Its totient is φ = 56577368590.

The previous prime is 56577368539. The next prime is 56577368597. The reversal of 56577368591 is 19586377565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56577368591 - 2³⁰ = 55503626767 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56577368597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28288684295 + 28288684296.

It is an arithmetic number, because the mean of its divisors is an integer number (28288684296).

Almost surely, 2^56577368591 is an apocalyptic number.

56577368591 is a deficient number, since it is larger than the sum of its proper divisors (1).

56577368591 is an equidigital number, since it uses as much as digits as its factorization.

56577368591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628000, while the sum is 62.

The spelling of 56577368591 in words is "fifty-six billion, five hundred seventy-seven million, three hundred sixty-eight thousand, five hundred ninety-one".