18179099475 has 12 divisors (see below), whose sum is σ = 30056111256. Its totient is φ = 9695519680.

The previous prime is 18179099473. The next prime is 18179099479. The reversal of 18179099475 is 57499097181.

It is not a de Polignac number, because 18179099475 - 2¹ = 18179099473 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18179099473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121193922 + ... + 121194071.

It is an arithmetic number, because the mean of its divisors is an integer number (2504675938).

Almost surely, 2^18179099475 is an apocalyptic number.

18179099475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18179099475 is a deficient number, since it is larger than the sum of its proper divisors (11877011781).

18179099475 is a wasteful number, since it uses less digits than its factorization.

18179099475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242388006 (or 242388001 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 60.

The spelling of 18179099475 in words is "eighteen billion, one hundred seventy-nine million, ninety-nine thousand, four hundred seventy-five".