518973940400 has 60 divisors (see below), whose sum is σ = 1246971143352. Its totient is φ = 207566891520.

The previous prime is 518973940337. The next prime is 518973940421. The reversal of 518973940400 is 4049379815.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3867227 + ... + 3999173.

Almost surely, 2^518973940400 is an apocalyptic number.

518973940400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

518973940400 is an abundant number, since it is smaller than the sum of its proper divisors (727997202952).

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

518973940400 is a wasteful number, since it uses less digits than its factorization.

518973940400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141798 (or 141787 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 518973940400 in words is "five hundred eighteen billion, nine hundred seventy-three million, nine hundred forty thousand, four hundred".