113172513858 has 48 divisors (see below), whose sum is σ = 246409555392. Its totient is φ = 37539612000.

The previous prime is 113172513851. The next prime is 113172513887. The reversal of 113172513858 is 858315271311.

113172513858 is a `hidden beast` number, since 1 + 1 + 3 + 17 + 251 + 385 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (113172513851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3205723 + ... + 3240833.

It is an arithmetic number, because the mean of its divisors is an integer number (5133532404).

Almost surely, 2^113172513858 is an apocalyptic number.

113172513858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

113172513858 is an abundant number, since it is smaller than the sum of its proper divisors (133237041534).

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

113172513858 is a wasteful number, since it uses less digits than its factorization.

113172513858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35991 (or 35988 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The spelling of 113172513858 in words is "one hundred thirteen billion, one hundred seventy-two million, five hundred thirteen thousand, eight hundred fifty-eight".