56161036161 has 24 divisors (see below), whose sum is σ = 82977133824. Its totient is φ = 36586736640.

The previous prime is 56161036147. The next prime is 56161036189. The reversal of 56161036161 is 16163016165.

56161036161 is a `hidden beast` number, since 5 + 6 + 1 + 610 + 36 + 1 + 6 + 1 = 666.

56161036161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56161036161 - 2⁷ = 56161036033 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (56161036111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167580 + ... + 374706.

It is an arithmetic number, because the mean of its divisors is an integer number (3457380576).

Almost surely, 2^56161036161 is an apocalyptic number.

It is an amenable number.

56161036161 is a deficient number, since it is larger than the sum of its proper divisors (26816097663).

56161036161 is a wasteful number, since it uses less digits than its factorization.

56161036161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207821 (or 207818 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 56161036161 in words is "fifty-six billion, one hundred sixty-one million, thirty-six thousand, one hundred sixty-one".