518317659805 has 16 divisors (see below), whose sum is σ = 692961640704. Its totient is φ = 368937906880.

The previous prime is 518317659791. The next prime is 518317659817. The reversal of 518317659805 is 508956713815.

It is not a de Polignac number, because 518317659805 - 2⁷ = 518317659677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 518317659805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100252282 + ... + 100257451.

It is an arithmetic number, because the mean of its divisors is an integer number (43310102544).

Almost surely, 2^518317659805 is an apocalyptic number.

518317659805 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

518317659805 is a deficient number, since it is larger than the sum of its proper divisors (174643980899).

518317659805 is a wasteful number, since it uses less digits than its factorization.

518317659805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200509796.

The product of its (nonzero) digits is 9072000, while the sum is 58.

The spelling of 518317659805 in words is "five hundred eighteen billion, three hundred seventeen million, six hundred fifty-nine thousand, eight hundred five".