18014723999 has 32 divisors (see below), whose sum is σ = 20137328640. Its totient is φ = 16039296000.

The previous prime is 18014723989. The next prime is 18014724043. The reversal of 18014723999 is 99932741081.

It is not a de Polignac number, because 18014723999 - 2⁸ = 18014723743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18014723999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18014723929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4286099 + ... + 4290299.

It is an arithmetic number, because the mean of its divisors is an integer number (629291520).

Almost surely, 2^18014723999 is an apocalyptic number.

18014723999 is a deficient number, since it is larger than the sum of its proper divisors (2122604641).

18014723999 is a wasteful number, since it uses less digits than its factorization.

18014723999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4431.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 18014723999 in words is "eighteen billion, fourteen million, seven hundred twenty-three thousand, nine hundred ninety-nine".