18111110011 has 2 divisors, whose sum is σ = 18111110012. Its totient is φ = 18111110010.

The previous prime is 18111109999. The next prime is 18111110027. The reversal of 18111110011 is 11001111181.

It is an a-pointer prime, because the next prime (18111110027) can be obtained adding 18111110011 to its sum of digits (16).

It is a weak prime.

It is an emirp because it is prime and its reverse (11001111181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18111110011 - 2²⁵ = 18077555579 is a prime.

It is not a weakly prime, because it can be changed into another prime (18111110051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9055555005 + 9055555006.

It is an arithmetic number, because the mean of its divisors is an integer number (9055555006).

Almost surely, 2^18111110011 is an apocalyptic number.

18111110011 is a deficient number, since it is larger than the sum of its proper divisors (1).

18111110011 is an equidigital number, since it uses as much as digits as its factorization.

18111110011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 18111110011 its reverse (11001111181), we get a palindrome (29112221192).

The spelling of 18111110011 in words is "eighteen billion, one hundred eleven million, one hundred ten thousand, eleven".