113999136191 has 4 divisors (see below), whose sum is σ = 115931325000. Its totient is φ = 112066947384.

The previous prime is 113999136187. The next prime is 113999136193. The reversal of 113999136191 is 191631999311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113999136191 - 2² = 113999136187 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 (113999136193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966094316 + ... + 966094433.

It is an arithmetic number, because the mean of its divisors is an integer number (28982831250).

Almost surely, 2^113999136191 is an apocalyptic number.

113999136191 is a deficient number, since it is larger than the sum of its proper divisors (1932188809).

113999136191 is an equidigital number, since it uses as much as digits as its factorization.

113999136191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932188808.

The product of its digits is 354294, while the sum is 53.

The spelling of 113999136191 in words is "one hundred thirteen billion, nine hundred ninety-nine million, one hundred thirty-six thousand, one hundred ninety-one".