56808945138 has 64 divisors (see below), whose sum is σ = 124885094400. Its totient is φ = 17084943360.

The previous prime is 56808945131. The next prime is 56808945161. The reversal of 56808945138 is 83154980865.

It is not an unprimeable number, because it can be changed into a prime (56808945131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5586903 + ... + 5597061.

It is an arithmetic number, because the mean of its divisors is an integer number (1951329600).

Almost surely, 2^56808945138 is an apocalyptic number.

56808945138 is an abundant number, since it is smaller than the sum of its proper divisors (68076149262).

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

56808945138 is a wasteful number, since it uses less digits than its factorization.

56808945138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10807.

The product of its (nonzero) digits is 8294400, while the sum is 57.

The spelling of 56808945138 in words is "fifty-six billion, eight hundred eight million, nine hundred forty-five thousand, one hundred thirty-eight".