113118581565 has 32 divisors (see below), whose sum is σ = 219381494400. Its totient is φ = 54845372160.

The previous prime is 113118581561. The next prime is 113118581579. The reversal of 113118581565 is 565185811311.

113118581565 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 1 + 8 + 5 + 81 + 565 = 666.

It is not a de Polignac number, because 113118581565 - 2² = 113118581561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 113118581565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113118581561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38085580 + ... + 38088549.

It is an arithmetic number, because the mean of its divisors is an integer number (6855671700).

Almost surely, 2^113118581565 is an apocalyptic number.

113118581565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113118581565 is a deficient number, since it is larger than the sum of its proper divisors (106262912835).

113118581565 is a wasteful number, since it uses less digits than its factorization.

113118581565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76174154 (or 76174148 counting only the distinct ones).

The product of its digits is 144000, while the sum is 45.

The spelling of 113118581565 in words is "one hundred thirteen billion, one hundred eighteen million, five hundred eighty-one thousand, five hundred sixty-five".