518212963640 has 16 divisors (see below), whose sum is σ = 1165979168280. Its totient is φ = 207285185440.

The previous prime is 518212963589. The next prime is 518212963651. The reversal of 518212963640 is 46369212815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6477662006 + ... + 6477662085.

Almost surely, 2^518212963640 is an apocalyptic number.

It is an amenable number.

518212963640 is an abundant number, since it is smaller than the sum of its proper divisors (647766204640).

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

518212963640 is a wasteful number, since it uses less digits than its factorization.

518212963640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12955324102 (or 12955324098 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 518212963640 in words is "five hundred eighteen billion, two hundred twelve million, nine hundred sixty-three thousand, six hundred forty".