56575516881 has 8 divisors (see below), whose sum is σ = 81236639680. Its totient is φ = 34815702672.

The previous prime is 56575516819. The next prime is 56575516931. The reversal of 56575516881 is 18861557565.

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

It is not a de Polignac number, because 56575516881 - 2²⁹ = 56038645969 is a prime.

It is a super-2 number, since 2×56575516881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56575516381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725327101 + ... + 725327178.

It is an arithmetic number, because the mean of its divisors is an integer number (10154579960).

Almost surely, 2^56575516881 is an apocalyptic number.

It is an amenable number.

56575516881 is a deficient number, since it is larger than the sum of its proper divisors (24661122799).

56575516881 is a wasteful number, since it uses less digits than its factorization.

56575516881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450654295.

The product of its digits is 10080000, while the sum is 57.

The spelling of 56575516881 in words is "fifty-six billion, five hundred seventy-five million, five hundred sixteen thousand, eight hundred eighty-one".