56912279520 has 48 divisors (see below), whose sum is σ = 179273682000. Its totient is φ = 15176607744.

The previous prime is 56912279503. The next prime is 56912279521. The reversal of 56912279520 is 2597221965.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×56912279520² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 56912279520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56912279521) 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, 59283145 + ... + 59284104.

It is an arithmetic number, because the mean of its divisors is an integer number (3734868375).

Almost surely, 2^56912279520 is an apocalyptic number.

It is an amenable number.

56912279520 is an abundant number, since it is smaller than the sum of its proper divisors (122361402480).

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

56912279520 is a wasteful number, since it uses less digits than its factorization.

56912279520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118567267 (or 118567259 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 48.

The spelling of 56912279520 in words is "fifty-six billion, nine hundred twelve million, two hundred seventy-nine thousand, five hundred twenty".