18110118501 has 24 divisors (see below), whose sum is σ = 27024481536. Its totient is φ = 11674609920.

The previous prime is 18110118469. The next prime is 18110118539. The reversal of 18110118501 is 10581101181.

It is not a de Polignac number, because 18110118501 - 2⁵ = 18110118469 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18110118571) 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 in 23 ways as a sum of consecutive naturals, for example, 332661 + ... + 383253.

It is an arithmetic number, because the mean of its divisors is an integer number (1126020064).

Almost surely, 2^18110118501 is an apocalyptic number.

It is an amenable number.

18110118501 is a deficient number, since it is larger than the sum of its proper divisors (8914363035).

18110118501 is a wasteful number, since it uses less digits than its factorization.

18110118501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51913 (or 51910 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 27.

Adding to 18110118501 its reverse (10581101181), we get a palindrome (28691219682).

The spelling of 18110118501 in words is "eighteen billion, one hundred ten million, one hundred eighteen thousand, five hundred one".