118418642556 has 96 divisors (see below), whose sum is σ = 281691927552. Its totient is φ = 38713006080.

The previous prime is 118418642549. The next prime is 118418642581. The reversal of 118418642556 is 655246814811.

It is a junction number, because it is equal to n+sod(n) for n = 118418642499 and 118418642508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81836625 + ... + 81838071.

It is an arithmetic number, because the mean of its divisors is an integer number (2934290912).

Almost surely, 2^118418642556 is an apocalyptic number.

It is an amenable number.

118418642556 is an abundant number, since it is smaller than the sum of its proper divisors (163273284996).

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

118418642556 is a wasteful number, since it uses less digits than its factorization.

118418642556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139 (or 2137 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 51.

The spelling of 118418642556 in words is "one hundred eighteen billion, four hundred eighteen million, six hundred forty-two thousand, five hundred fifty-six".