113513055021 has 20 divisors (see below), whose sum is σ = 169587257664. Its totient is φ = 75667170600.

The previous prime is 113513054971. The next prime is 113513055067. The reversal of 113513055021 is 120550315311.

113513055021 is a `hidden beast` number, since 1 + 1 + 351 + 305 + 5 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 113513055021 - 2¹⁵ = 113513022253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113513075021) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 728566 + ... + 870536.

Almost surely, 2^113513055021 is an apocalyptic number.

It is an amenable number.

113513055021 is a deficient number, since it is larger than the sum of its proper divisors (56074202643).

113513055021 is an equidigital number, since it uses as much as digits as its factorization.

113513055021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151854 (or 151845 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The spelling of 113513055021 in words is "one hundred thirteen billion, five hundred thirteen million, fifty-five thousand, twenty-one".