118684657728 has 840 divisors, whose sum is σ = 445779704832. Its totient is φ = 30945245184.

The previous prime is 118684657699. The next prime is 118684657759. The reversal of 118684657728 is 827756486811.

It is a happy number.

118684657728 is a `hidden beast` number, since 1 + 1 + 86 + 8 + 465 + 77 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 419380275 + ... + 419380557.

Almost surely, 2^118684657728 is an apocalyptic number.

118684657728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118684657728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222889852416).

118684657728 is an abundant number, since it is smaller than the sum of its proper divisors (327095047104).

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

118684657728 is a wasteful number, since it uses less digits than its factorization.

118684657728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 435 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 63.

The spelling of 118684657728 in words is "one hundred eighteen billion, six hundred eighty-four million, six hundred fifty-seven thousand, seven hundred twenty-eight".