118341138891 has 32 divisors (see below), whose sum is σ = 159715196928. Its totient is φ = 77937876000.

The previous prime is 118341138889. The next prime is 118341138917. The reversal of 118341138891 is 198831143811.

It is not a de Polignac number, because 118341138891 - 2¹ = 118341138889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118341138891.

It is not an unprimeable number, because it can be changed into a prime (118341158891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108868950 + ... + 108870036.

It is an arithmetic number, because the mean of its divisors is an integer number (4991099904).

Almost surely, 2^118341138891 is an apocalyptic number.

118341138891 is a deficient number, since it is larger than the sum of its proper divisors (41374058037).

118341138891 is a wasteful number, since it uses less digits than its factorization.

118341138891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391.

The product of its digits is 165888, while the sum is 48.

The spelling of 118341138891 in words is "one hundred eighteen billion, three hundred forty-one million, one hundred thirty-eight thousand, eight hundred ninety-one".