518405172311 has 8 divisors (see below), whose sum is σ = 573371209824. Its totient is φ = 465594665760.

The previous prime is 518405172289. The next prime is 518405172323. The reversal of 518405172311 is 113271504815.

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 518405172311 - 2⁶ = 518405172247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518405172391) 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, 538882235 + ... + 538883196.

It is an arithmetic number, because the mean of its divisors is an integer number (71671401228).

Almost surely, 2^518405172311 is an apocalyptic number.

518405172311 is a deficient number, since it is larger than the sum of its proper divisors (54966037513).

518405172311 is a wasteful number, since it uses less digits than its factorization.

518405172311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077765481.

The product of its (nonzero) digits is 33600, while the sum is 38.

The spelling of 518405172311 in words is "five hundred eighteen billion, four hundred five million, one hundred seventy-two thousand, three hundred eleven".