56631613105 has 8 divisors (see below), whose sum is σ = 70301313000. Its totient is φ = 43743038976.

The previous prime is 56631613097. The next prime is 56631613139. The reversal of 56631613105 is 50131613665.

It can be written as a sum of positive squares in 4 ways, for example, as 1631513664 + 55000099441 = 40392^2 + 234521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56631613105 - 2³ = 56631613097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195281280 + ... + 195281569.

It is an arithmetic number, because the mean of its divisors is an integer number (8787664125).

Almost surely, 2^56631613105 is an apocalyptic number.

It is an amenable number.

56631613105 is a deficient number, since it is larger than the sum of its proper divisors (13669699895).

56631613105 is a wasteful number, since it uses less digits than its factorization.

56631613105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390562883.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 56631613105 in words is "fifty-six billion, six hundred thirty-one million, six hundred thirteen thousand, one hundred five".