556056511161 has 4 divisors (see below), whose sum is σ = 741408681552. Its totient is φ = 370704340772.

The previous prime is 556056511139. The next prime is 556056511169. The reversal of 556056511161 is 161115650655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 556056511161 - 2⁹ = 556056510649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (556056511169) 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, 92676085191 + ... + 92676085196.

It is an arithmetic number, because the mean of its divisors is an integer number (185352170388).

Almost surely, 2^556056511161 is an apocalyptic number.

It is an amenable number.

556056511161 is a deficient number, since it is larger than the sum of its proper divisors (185352170391).

556056511161 is a wasteful number, since it uses less digits than its factorization.

556056511161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185352170390.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 556056511161 in words is "five hundred fifty-six billion, fifty-six million, five hundred eleven thousand, one hundred sixty-one".