56515510160 has 20 divisors (see below), whose sum is σ = 131398561308. Its totient is φ = 22606204032.

The previous prime is 56515510147. The next prime is 56515510169. The reversal of 56515510160 is 6101551565.

It can be written as a sum of positive squares in 2 ways, for example, as 38774335744 + 17741174416 = 196912^2 + 133196^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 56515510160.

It is not an unprimeable number, because it can be changed into a prime (56515510169) 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 3 ways as a sum of consecutive naturals, for example, 353221859 + ... + 353222018.

Almost surely, 2^56515510160 is an apocalyptic number.

It is an amenable number.

56515510160 is an abundant number, since it is smaller than the sum of its proper divisors (74883051148).

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

56515510160 is a wasteful number, since it uses less digits than its factorization.

56515510160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706443890 (or 706443884 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 56515510160 in words is "fifty-six billion, five hundred fifteen million, five hundred ten thousand, one hundred sixty".