118191391575 has 24 divisors (see below), whose sum is σ = 198721804800. Its totient is φ = 61967009760.

The previous prime is 118191391567. The next prime is 118191391603. The reversal of 118191391575 is 575193191811.

It is not a de Polignac number, because 118191391575 - 2³ = 118191391567 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13350535 + ... + 13359384.

It is an arithmetic number, because the mean of its divisors is an integer number (8280075200).

Almost surely, 2^118191391575 is an apocalyptic number.

118191391575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

118191391575 is a deficient number, since it is larger than the sum of its proper divisors (80530413225).

118191391575 is a wasteful number, since it uses less digits than its factorization.

118191391575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26709991 (or 26709986 counting only the distinct ones).

The product of its digits is 340200, while the sum is 51.

The spelling of 118191391575 in words is "one hundred eighteen billion, one hundred ninety-one million, three hundred ninety-one thousand, five hundred seventy-five".