113665512564 has 36 divisors (see below), whose sum is σ = 287846473824. Its totient is φ = 37819231632.

The previous prime is 113665512539. The next prime is 113665512577. The reversal of 113665512564 is 465215566311.

113665512564 is a `hidden beast` number, since 1 + 1 + 36 + 6 + 5 + 51 + 2 + 564 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2866392 + ... + 2905775.

It is an arithmetic number, because the mean of its divisors is an integer number (7995735384).

Almost surely, 2^113665512564 is an apocalyptic number.

It is an amenable number.

113665512564 is an abundant number, since it is smaller than the sum of its proper divisors (174180961260).

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

113665512564 is a wasteful number, since it uses less digits than its factorization.

113665512564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772724 (or 5772719 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The spelling of 113665512564 in words is "one hundred thirteen billion, six hundred sixty-five million, five hundred twelve thousand, five hundred sixty-four".