113256561988 has 24 divisors (see below), whose sum is σ = 198526204800. Its totient is φ = 56534850720.

The previous prime is 113256561983. The next prime is 113256562009. The reversal of 113256561988 is 889165652311.

It is not an unprimeable number, because it can be changed into a prime (113256561983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9800838 + ... + 9812386.

It is an arithmetic number, because the mean of its divisors is an integer number (8271925200).

Almost surely, 2^113256561988 is an apocalyptic number.

It is an amenable number.

113256561988 is a deficient number, since it is larger than the sum of its proper divisors (85269642812).

113256561988 is a wasteful number, since it uses less digits than its factorization.

113256561988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15387 (or 15385 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 55.

The spelling of 113256561988 in words is "one hundred thirteen billion, two hundred fifty-six million, five hundred sixty-one thousand, nine hundred eighty-eight".