18117132304 has 20 divisors (see below), whose sum is σ = 35105263164. Its totient is φ = 9057709568.

The previous prime is 18117132289. The next prime is 18117132311. The reversal of 18117132304 is 40323171181.

It can be written as a sum of positive squares in 2 ways, for example, as 16679205904 + 1437926400 = 129148^2 + 37920^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142764 + ... + 237940.

Almost surely, 2^18117132304 is an apocalyptic number.

It is an amenable number.

18117132304 is a deficient number, since it is larger than the sum of its proper divisors (16988130860).

18117132304 is a wasteful number, since it uses less digits than its factorization.

18117132304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107082 (or 107076 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 18117132304 in words is "eighteen billion, one hundred seventeen million, one hundred thirty-two thousand, three hundred four".