113508446391 has 16 divisors (see below), whose sum is σ = 168208453600. Its totient is φ = 75650791104.

The previous prime is 113508446357. The next prime is 113508446419. The reversal of 113508446391 is 193644805311.

113508446391 is a `hidden beast` number, since 1 + 1 + 3 + 5 + 0 + 8 + 4 + 4 + 639 + 1 = 666.

It is not a de Polignac number, because 113508446391 - 2¹⁸ = 113508184247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113508446341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500356 + ... + 690921.

It is an arithmetic number, because the mean of its divisors is an integer number (10513028350).

Almost surely, 2^113508446391 is an apocalyptic number.

113508446391 is a deficient number, since it is larger than the sum of its proper divisors (54700007209).

113508446391 is a wasteful number, since it uses less digits than its factorization.

113508446391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194815 (or 1194809 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 113508446391 in words is "one hundred thirteen billion, five hundred eight million, four hundred forty-six thousand, three hundred ninety-one".