518815841252 has 24 divisors (see below), whose sum is σ = 955737095040. Its totient is φ = 245748777120.

The previous prime is 518815841237. The next prime is 518815841263. The reversal of 518815841252 is 252148518815.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 518815841252.

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, 4981253 + ... + 5084339.

It is an arithmetic number, because the mean of its divisors is an integer number (39822378960).

Almost surely, 2^518815841252 is an apocalyptic number.

It is an amenable number.

518815841252 is a deficient number, since it is larger than the sum of its proper divisors (436921253788).

518815841252 is a wasteful number, since it uses less digits than its factorization.

518815841252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169331 (or 169329 counting only the distinct ones).

The product of its digits is 1024000, while the sum is 50.

The spelling of 518815841252 in words is "five hundred eighteen billion, eight hundred fifteen million, eight hundred forty-one thousand, two hundred fifty-two".