18000111011 has 8 divisors (see below), whose sum is σ = 18023890800. Its totient is φ = 17976349440.

The previous prime is 18000111001. The next prime is 18000111043. The reversal of 18000111011 is 11011100081.

It is a happy number.

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 18000111011 - 2²⁶ = 17933002147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18000111001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3452975 + ... + 3458183.

It is an arithmetic number, because the mean of its divisors is an integer number (2252986350).

Almost surely, 2^18000111011 is an apocalyptic number.

18000111011 is a deficient number, since it is larger than the sum of its proper divisors (23779789).

18000111011 is a wasteful number, since it uses less digits than its factorization.

18000111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9109.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 18000111011 its reverse (11011100081), we get a palindrome (29011211092).

The spelling of 18000111011 in words is "eighteen billion, one hundred eleven thousand, eleven".