56647883161 has 4 divisors (see below), whose sum is σ = 56653171812. Its totient is φ = 56642594512.

The previous prime is 56647883129. The next prime is 56647883179. The reversal of 56647883161 is 16138874665.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8979457600 + 47668425561 = 94760^2 + 218331^2 .

It is a cyclic number.

It is not a de Polignac number, because 56647883161 - 2⁵ = 56647883129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56647883111) 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, 2628226 + ... + 2649691.

It is an arithmetic number, because the mean of its divisors is an integer number (14163292953).

Almost surely, 2^56647883161 is an apocalyptic number.

It is an amenable number.

56647883161 is a deficient number, since it is larger than the sum of its proper divisors (5288651).

56647883161 is a wasteful number, since it uses less digits than its factorization.

56647883161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288650.

The product of its digits is 5806080, while the sum is 55.

The spelling of 56647883161 in words is "fifty-six billion, six hundred forty-seven million, eight hundred eighty-three thousand, one hundred sixty-one".