118915523139 has 12 divisors (see below), whose sum is σ = 184440403464. Its totient is φ = 67951727424.

The previous prime is 118915523131. The next prime is 118915523159. The reversal of 118915523139 is 931325519811.

It is a happy number.

It is not a de Polignac number, because 118915523139 - 2³ = 118915523131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118915523131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 404474422 + ... + 404474715.

It is an arithmetic number, because the mean of its divisors is an integer number (15370033622).

Almost surely, 2^118915523139 is an apocalyptic number.

118915523139 is a deficient number, since it is larger than the sum of its proper divisors (65524880325).

118915523139 is an equidigital number, since it uses as much as digits as its factorization.

118915523139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808949154 (or 808949147 counting only the distinct ones).

The product of its digits is 291600, while the sum is 48.

The spelling of 118915523139 in words is "one hundred eighteen billion, nine hundred fifteen million, five hundred twenty-three thousand, one hundred thirty-nine".