18040611199 has 16 divisors (see below), whose sum is σ = 19492268544. Its totient is φ = 16598181600.

The previous prime is 18040611143. The next prime is 18040611221. The reversal of 18040611199 is 99111604081.

It is not a de Polignac number, because 18040611199 - 2¹⁵ = 18040578431 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 (18040611139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7805254 + ... + 7807564.

It is an arithmetic number, because the mean of its divisors is an integer number (1218266784).

Almost surely, 2^18040611199 is an apocalyptic number.

18040611199 is a deficient number, since it is larger than the sum of its proper divisors (1451657345).

18040611199 is a wasteful number, since it uses less digits than its factorization.

18040611199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038.

The product of its (nonzero) digits is 15552, while the sum is 40.

The spelling of 18040611199 in words is "eighteen billion, forty million, six hundred eleven thousand, one hundred ninety-nine".