2118118115918 has 32 divisors (see below), whose sum is σ = 3641967576000. Its totient is φ = 905038801920.

The previous prime is 2118118115899. The next prime is 2118118115921. The reversal of 2118118115918 is 8195118118112.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31699208 + ... + 31765956.

It is an arithmetic number, because the mean of its divisors is an integer number (113811486750).

Almost surely, 2^{2118118115918} is an apocalyptic number.

2118118115918 is a deficient number, since it is larger than the sum of its proper divisors (1523849460082).

2118118115918 is a wasteful number, since it uses less digits than its factorization.

2118118115918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73532.

The product of its digits is 46080, while the sum is 47.

The spelling of 2118118115918 in words is "two trillion, one hundred eighteen billion, one hundred eighteen million, one hundred fifteen thousand, nine hundred eighteen".