113515612551 has 12 divisors (see below), whose sum is σ = 178873086600. Its totient is φ = 68797340880.

The previous prime is 113515612549. The next prime is 113515612577. The reversal of 113515612551 is 155216515311.

113515612551 is a `hidden beast` number, since 1 + 1 + 3 + 51 + 56 + 1 + 2 + 551 = 666.

It is not a de Polignac number, because 113515612551 - 2¹ = 113515612549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113515632551) 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 11 ways as a sum of consecutive naturals, for example, 573311076 + ... + 573311273.

It is an arithmetic number, because the mean of its divisors is an integer number (14906090550).

Almost surely, 2^113515612551 is an apocalyptic number.

113515612551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113515612551 is a deficient number, since it is larger than the sum of its proper divisors (65357474049).

113515612551 is a wasteful number, since it uses less digits than its factorization.

113515612551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146622366 (or 1146622363 counting only the distinct ones).

The product of its digits is 22500, while the sum is 36.

The spelling of 113515612551 in words is "one hundred thirteen billion, five hundred fifteen million, six hundred twelve thousand, five hundred fifty-one".