56577568421 has 8 divisors (see below), whose sum is σ = 64969456800. Its totient is φ = 48727092240.

The previous prime is 56577568391. The next prime is 56577568483. The reversal of 56577568421 is 12486577565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56577568421 - 2³⁰ = 55503826597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56577568921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135352826 + ... + 135353243.

It is an arithmetic number, because the mean of its divisors is an integer number (8121182100).

Almost surely, 2^56577568421 is an apocalyptic number.

It is an amenable number.

56577568421 is a deficient number, since it is larger than the sum of its proper divisors (8391888379).

56577568421 is a wasteful number, since it uses less digits than its factorization.

56577568421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270706099.

The product of its digits is 14112000, while the sum is 56.

The spelling of 56577568421 in words is "fifty-six billion, five hundred seventy-seven million, five hundred sixty-eight thousand, four hundred twenty-one".