518972873897 has 8 divisors (see below), whose sum is σ = 519859159680. Its totient is φ = 518086835280.

The previous prime is 518972873851. The next prime is 518972873933. The reversal of 518972873897 is 798378279815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 518972873897 - 2²⁰ = 518971825321 is a prime.

It is a super-2 number, since 2×518972873897² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (518972843897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4416647 + ... + 4532627.

It is an arithmetic number, because the mean of its divisors is an integer number (64982394960).

Almost surely, 2^518972873897 is an apocalyptic number.

It is an amenable number.

518972873897 is a deficient number, since it is larger than the sum of its proper divisors (886285783).

518972873897 is a wasteful number, since it uses less digits than its factorization.

518972873897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123583.

The product of its digits is 426746880, while the sum is 74.

It can be divided in two parts, 5189728 and 73897, that added together give a palindrome (5263625).

The spelling of 518972873897 in words is "five hundred eighteen billion, nine hundred seventy-two million, eight hundred seventy-three thousand, eight hundred ninety-seven".