56164940138 has 8 divisors (see below), whose sum is σ = 84545105088. Its totient is φ = 27983238444.

The previous prime is 56164940129. The next prime is 56164940147. The reversal of 56164940138 is 83104946165.

It is an interprime number because it is at equal distance from previous prime (56164940129) and next prime (56164940147).

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

It is a junction number, because it is equal to n+sod(n) for n = 56164940092 and 56164940101.

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 3 ways as a sum of consecutive naturals, for example, 49615106 + ... + 49616237.

It is an arithmetic number, because the mean of its divisors is an integer number (10568138136).

Almost surely, 2^56164940138 is an apocalyptic number.

56164940138 is a deficient number, since it is larger than the sum of its proper divisors (28380164950).

56164940138 is a wasteful number, since it uses less digits than its factorization.

56164940138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99231628.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 56164940138 in words is "fifty-six billion, one hundred sixty-four million, nine hundred forty thousand, one hundred thirty-eight".