56161166204 has 48 divisors (see below), whose sum is σ = 122256249696. Its totient is φ = 22177996800.

The previous prime is 56161166167. The next prime is 56161166249. The reversal of 56161166204 is 40266116165.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2878037 + ... + 2897484.

It is an arithmetic number, because the mean of its divisors is an integer number (2547005202).

Almost surely, 2^56161166204 is an apocalyptic number.

It is an amenable number.

56161166204 is an abundant number, since it is smaller than the sum of its proper divisors (66095083492).

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

56161166204 is a wasteful number, since it uses less digits than its factorization.

56161166204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5775566 (or 5775564 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 56161166204 in words is "fifty-six billion, one hundred sixty-one million, one hundred sixty-six thousand, two hundred four".