113271911581491 has 24 divisors (see below), whose sum is σ = 181884646559616. Its totient is φ = 67457217813120.

The previous prime is 113271911581427. The next prime is 113271911581513. The reversal of 113271911581491 is 194185119172311.

113271911581491 is a `hidden beast` number, since 1 + 1 + 3 + 2 + 7 + 1 + 9 + 11 + 581 + 49 + 1 = 666.

It is not a de Polignac number, because 113271911581491 - 2⁶ = 113271911581427 is a prime.

It is a super-5 number, since 5×113271911581491⁵ (a number of 71 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (113271911581391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15615093090 + ... + 15615100343.

It is an arithmetic number, because the mean of its divisors is an integer number (7578526939984).

Almost surely, 2^{113271911581491} is an apocalyptic number.

113271911581491 is a deficient number, since it is larger than the sum of its proper divisors (68612734978125).

113271911581491 is a wasteful number, since it uses less digits than its factorization.

113271911581491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31230193483 (or 31230193480 counting only the distinct ones).

The product of its digits is 544320, while the sum is 54.

The spelling of 113271911581491 in words is "one hundred thirteen trillion, two hundred seventy-one billion, nine hundred eleven million, five hundred eighty-one thousand, four hundred ninety-one".