56400613280 has 48 divisors (see below), whose sum is σ = 145359766944. Its totient is φ = 20509313280.

The previous prime is 56400613277. The next prime is 56400613331. The reversal of 56400613280 is 8231600465.

It is a super-2 number, since 2×56400613280² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56400613280.

It is an unprimeable number.

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, 16021142 + ... + 16024661.

It is an arithmetic number, because the mean of its divisors is an integer number (3028328478).

Almost surely, 2^56400613280 is an apocalyptic number.

It is an amenable number.

56400613280 is an abundant number, since it is smaller than the sum of its proper divisors (88959153664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56400613280 is a wasteful number, since it uses less digits than its factorization.

56400613280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32045829 (or 32045821 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 56400613280 in words is "fifty-six billion, four hundred million, six hundred thirteen thousand, two hundred eighty".