518996172799 has 48 divisors (see below), whose sum is σ = 581448974400. Its totient is φ = 462742225920.

The previous prime is 518996172743. The next prime is 518996172833. The reversal of 518996172799 is 997271699815.

It is not a de Polignac number, because 518996172799 - 2¹¹ = 518996170751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518996142799) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379660014 + ... + 379661380.

It is an arithmetic number, because the mean of its divisors is an integer number (12113520300).

Almost surely, 2^518996172799 is an apocalyptic number.

518996172799 is a deficient number, since it is larger than the sum of its proper divisors (62452801601).

518996172799 is a wasteful number, since it uses less digits than its factorization.

518996172799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940 (or 1927 counting only the distinct ones).

The product of its digits is 154314720, while the sum is 73.

The spelling of 518996172799 in words is "five hundred eighteen billion, nine hundred ninety-six million, one hundred seventy-two thousand, seven hundred ninety-nine".