518056818456 has 32 divisors (see below), whose sum is σ = 1319578691760. Its totient is φ = 169427386752.

The previous prime is 518056818443. The next prime is 518056818473. The reversal of 518056818456 is 654818650815.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 518056818396 and 518056818405.

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, 203637415 + ... + 203639958.

Almost surely, 2^518056818456 is an apocalyptic number.

It is an amenable number.

518056818456 is an abundant number, since it is smaller than the sum of its proper divisors (801521873304).

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

518056818456 is a wasteful number, since it uses less digits than its factorization.

518056818456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407277435 (or 407277431 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 57.

The spelling of 518056818456 in words is "five hundred eighteen billion, fifty-six million, eight hundred eighteen thousand, four hundred fifty-six".