118991655906 has 8 divisors (see below), whose sum is σ = 237983311824. Its totient is φ = 39663885300.

The previous prime is 118991655883. The next prime is 118991655931. The reversal of 118991655906 is 609556199811.

It is a sphenic number, since it is the product of 3 distinct primes.

118991655906 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 118991655906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9915971320 + ... + 9915971331.

It is an arithmetic number, because the mean of its divisors is an integer number (29747913978).

Almost surely, 2^118991655906 is an apocalyptic number.

118991655906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118991655906 is a wasteful number, since it uses less digits than its factorization.

118991655906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19831942656.

The product of its (nonzero) digits is 5248800, while the sum is 60.

The spelling of 118991655906 in words is "one hundred eighteen billion, nine hundred ninety-one million, six hundred fifty-five thousand, nine hundred six".