518157868751815 has 16 divisors (see below), whose sum is σ = 634240412499456. Its totient is φ = 406243403737600.

The previous prime is 518157868751753. The next prime is 518157868751827.

518157868751815 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 518157868751815 - 2¹¹ = 518157868749767 is a prime.

It is a Duffinian number.

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, 1109478631 + ... + 1109945560.

It is an arithmetic number, because the mean of its divisors is an integer number (39640025781216).

Almost surely, 2^{518157868751815} is an apocalyptic number.

518157868751815 is a deficient number, since it is larger than the sum of its proper divisors (116082543747641).

518157868751815 is a wasteful number, since it uses less digits than its factorization.

518157868751815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219425130.

The product of its digits is 752640000, while the sum is 76.

The spelling of 518157868751815 in words is "five hundred eighteen trillion, one hundred fifty-seven billion, eight hundred sixty-eight million, seven hundred fifty-one thousand, eight hundred fifteen".