18118267475 has 96 divisors (see below), whose sum is σ = 29569536000. Its totient is φ = 10669276800.

The previous prime is 18118267469. The next prime is 18118267477. The reversal of 18118267475 is 57476281181.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-18118267475 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18118267477) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21908012 + ... + 21908838.

It is an arithmetic number, because the mean of its divisors is an integer number (308016000).

Almost surely, 2^18118267475 is an apocalyptic number.

18118267475 is a deficient number, since it is larger than the sum of its proper divisors (11451268525).

18118267475 is a wasteful number, since it uses less digits than its factorization.

18118267475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1468 counting only the distinct ones).

The product of its digits is 752640, while the sum is 50.

The spelling of 18118267475 in words is "eighteen billion, one hundred eighteen million, two hundred sixty-seven thousand, four hundred seventy-five".