18115112959 has 8 divisors (see below), whose sum is σ = 18337439232. Its totient is φ = 17892883800.

The previous prime is 18115112941. The next prime is 18115112987. The reversal of 18115112959 is 95921151181.

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 18115112959 - 2⁵ = 18115112927 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 (18115112989) 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, 395184 + ... + 438634.

It is an arithmetic number, because the mean of its divisors is an integer number (2292179904).

Almost surely, 2^18115112959 is an apocalyptic number.

18115112959 is a deficient number, since it is larger than the sum of its proper divisors (222326273).

18115112959 is an equidigital number, since it uses as much as digits as its factorization.

18115112959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48557.

The product of its digits is 32400, while the sum is 43.

The spelling of 18115112959 in words is "eighteen billion, one hundred fifteen million, one hundred twelve thousand, nine hundred fifty-nine".