56506651166051 has 4 divisors (see below), whose sum is σ = 57187454192232. Its totient is φ = 55825848139872.

The previous prime is 56506651166011. The next prime is 56506651166099. The reversal of 56506651166051 is 15066115660565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56506651166051 - 2³⁰ = 56505577424227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56506651165984 and 56506651166002.

It is not an unprimeable number, because it can be changed into a prime (56506651166011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340401512966 + ... + 340401513131.

It is an arithmetic number, because the mean of its divisors is an integer number (14296863548058).

Almost surely, 2^{56506651166051} is an apocalyptic number.

56506651166051 is a deficient number, since it is larger than the sum of its proper divisors (680803026181).

56506651166051 is an equidigital number, since it uses as much as digits as its factorization.

56506651166051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680803026180.

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 56506651166051 in words is "fifty-six trillion, five hundred six billion, six hundred fifty-one million, one hundred sixty-six thousand, fifty-one".