118645644856 has 96 divisors (see below), whose sum is σ = 241009322400. Its totient is φ = 54716497920.

The previous prime is 118645644851. The next prime is 118645644893. The reversal of 118645644856 is 658446546811.

It is a self number, because there is not a number n which added to its sum of digits gives 118645644856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118645644851) 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 23 ways as a sum of consecutive naturals, for example, 91055101 + ... + 91056403.

It is an arithmetic number, because the mean of its divisors is an integer number (2510513775).

Almost surely, 2^118645644856 is an apocalyptic number.

It is an amenable number.

118645644856 is an abundant number, since it is smaller than the sum of its proper divisors (122363677544).

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

118645644856 is a wasteful number, since it uses less digits than its factorization.

118645644856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157 (or 2134 counting only the distinct ones).

The product of its digits is 22118400, while the sum is 58.

The spelling of 118645644856 in words is "one hundred eighteen billion, six hundred forty-five million, six hundred forty-four thousand, eight hundred fifty-six".