113439881465855 has 128 divisors (see below), whose sum is σ = 164473443164160. Its totient is φ = 73433059983360.

The previous prime is 113439881465821. The next prime is 113439881465861. The reversal of 113439881465855 is 558564188934311.

It is a Cunningham number, because it is equal to 10650816²-1.

It is not a de Polignac number, because 113439881465855 - 2¹⁸ = 113439881203711 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 42123979889 + ... + 42123982581.

It is an arithmetic number, because the mean of its divisors is an integer number (1284948774720).

Almost surely, 2^{113439881465855} is an apocalyptic number.

113439881465855 is a deficient number, since it is larger than the sum of its proper divisors (51033561698305).

113439881465855 is a wasteful number, since it uses less digits than its factorization.

113439881465855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641.

The product of its digits is 497664000, while the sum is 71.

The spelling of 113439881465855 in words is "one hundred thirteen trillion, four hundred thirty-nine billion, eight hundred eighty-one million, four hundred sixty-five thousand, eight hundred fifty-five".