56856640481 has 16 divisors (see below), whose sum is σ = 59787504000. Its totient is φ = 53964438528.

The previous prime is 56856640457. The next prime is 56856640513. The reversal of 56856640481 is 18404665865.

It is a happy number.

It is not a de Polignac number, because 56856640481 - 2²² = 56852446177 is a prime.

It is a super-2 number, since 2×56856640481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56856640781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8145665 + ... + 8152641.

It is an arithmetic number, because the mean of its divisors is an integer number (3736719000).

Almost surely, 2^56856640481 is an apocalyptic number.

It is an amenable number.

56856640481 is a deficient number, since it is larger than the sum of its proper divisors (2930863519).

56856640481 is a wasteful number, since it uses less digits than its factorization.

56856640481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9688.

The product of its (nonzero) digits is 5529600, while the sum is 53.

The spelling of 56856640481 in words is "fifty-six billion, eight hundred fifty-six million, six hundred forty thousand, four hundred eighty-one".