18118260215 has 32 divisors (see below), whose sum is σ = 24031183680. Its totient is φ = 13004032000.

The previous prime is 18118260203. The next prime is 18118260257. The reversal of 18118260215 is 51206281181.

It is not a de Polignac number, because 18118260215 - 2¹² = 18118256119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1755791 + ... + 1766079.

It is an arithmetic number, because the mean of its divisors is an integer number (750974490).

Almost surely, 2^18118260215 is an apocalyptic number.

18118260215 is a deficient number, since it is larger than the sum of its proper divisors (5912923465).

18118260215 is a wasteful number, since it uses less digits than its factorization.

18118260215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10723.

The product of its (nonzero) digits is 7680, while the sum is 35.

The spelling of 18118260215 in words is "eighteen billion, one hundred eighteen million, two hundred sixty thousand, two hundred fifteen".