518136511992 has 256 divisors, whose sum is σ = 1501419110400. Its totient is φ = 147559104000.

The previous prime is 518136511987. The next prime is 518136512011. The reversal of 518136511992 is 299115631815.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38924634 + ... + 38937942.

It is an arithmetic number, because the mean of its divisors is an integer number (5864918400).

Almost surely, 2^518136511992 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 518136511992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (750709555200).

518136511992 is an abundant number, since it is smaller than the sum of its proper divisors (983282598408).

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

518136511992 is a wasteful number, since it uses less digits than its factorization.

518136511992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13498 (or 13494 counting only the distinct ones).

The product of its digits is 583200, while the sum is 51.

The spelling of 518136511992 in words is "five hundred eighteen billion, one hundred thirty-six million, five hundred eleven thousand, nine hundred ninety-two".