518493320250 has 32 divisors (see below), whose sum is σ = 1294159329216. Its totient is φ = 138264885200.

The previous prime is 518493320221. The next prime is 518493320269. The reversal of 518493320250 is 52023394815.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345661464 + ... + 345662963.

It is an arithmetic number, because the mean of its divisors is an integer number (40442479038).

Almost surely, 2^518493320250 is an apocalyptic number.

518493320250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

518493320250 is an abundant number, since it is smaller than the sum of its proper divisors (775666008966).

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

518493320250 is a wasteful number, since it uses less digits than its factorization.

518493320250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691324447 (or 691324437 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 518493320250 in words is "five hundred eighteen billion, four hundred ninety-three million, three hundred twenty thousand, two hundred fifty".