518212186864 has 10 divisors (see below), whose sum is σ = 1004036112080. Its totient is φ = 259106093424.

The previous prime is 518212186853. The next prime is 518212186873. The reversal of 518212186864 is 468681212815.

It is a super-2 number, since 2×518212186864² (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 as a sum of consecutive naturals, namely, 16194130824 + ... + 16194130855.

It is an arithmetic number, because the mean of its divisors is an integer number (100403611208).

Almost surely, 2^518212186864 is an apocalyptic number.

It is an amenable number.

518212186864 is a deficient number, since it is larger than the sum of its proper divisors (485823925216).

518212186864 is a wasteful number, since it uses less digits than its factorization.

518212186864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32388261687 (or 32388261681 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 52.

The spelling of 518212186864 in words is "five hundred eighteen billion, two hundred twelve million, one hundred eighty-six thousand, eight hundred sixty-four".