118511640864 has 192 divisors, whose sum is σ = 366759550080. Its totient is φ = 37102141440.

The previous prime is 118511640857. The next prime is 118511640901. The reversal of 118511640864 is 468046115811.

118511640864 is a `hidden beast` number, since 1 + 18 + 511 + 6 + 40 + 86 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7203592 + ... + 7220024.

It is an arithmetic number, because the mean of its divisors is an integer number (1910205990).

Almost surely, 2^118511640864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118511640864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183379775040).

118511640864 is an abundant number, since it is smaller than the sum of its proper divisors (248247909216).

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

118511640864 is a wasteful number, since it uses less digits than its factorization.

118511640864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16960 (or 16946 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

It can be divided in two parts, 118511 and 640864, that added together give a 5-th power (759375 = 15⁵).

The spelling of 118511640864 in words is "one hundred eighteen billion, five hundred eleven million, six hundred forty thousand, eight hundred sixty-four".