518388019924 has 24 divisors (see below), whose sum is σ = 956690487200. Its totient is φ = 245098314720.

The previous prime is 518388019901. The next prime is 518388019931. The reversal of 518388019924 is 429910883815.

It is a super-2 number, since 2×518388019924² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6262854 + ... + 6345085.

Almost surely, 2^518388019924 is an apocalyptic number.

It is an amenable number.

518388019924 is a deficient number, since it is larger than the sum of its proper divisors (438302467276).

518388019924 is a wasteful number, since it uses less digits than its factorization.

518388019924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12608503 (or 12608501 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 58.

The spelling of 518388019924 in words is "five hundred eighteen billion, three hundred eighty-eight million, nineteen thousand, nine hundred twenty-four".