118831393838520 has 768 divisors, whose sum is σ = 440842881024000. Its totient is φ = 28549823500800.

The previous prime is 118831393838501. The next prime is 118831393838581. The reversal of 118831393838520 is 25838393138811.

118831393838520 is a `hidden beast` number, since 1 + 1 + 8 + 8 + 3 + 13 + 93 + 8 + 3 + 8 + 520 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5391857661 + ... + 5391879699.

It is an arithmetic number, because the mean of its divisors is an integer number (574014168000).

Almost surely, 2^{118831393838520} is an apocalyptic number.

118831393838520 is a gapful number since it is divisible by the number (10) 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 118831393838520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220421440512000).

118831393838520 is an abundant number, since it is smaller than the sum of its proper divisors (322011487185480).

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

118831393838520 is a wasteful number, since it uses less digits than its factorization.

118831393838520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22526 (or 22510 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 118831393838520 in words is "one hundred eighteen trillion, eight hundred thirty-one billion, three hundred ninety-three million, eight hundred thirty-eight thousand, five hundred twenty".