18401185116775 has 12 divisors (see below), whose sum is σ = 22817747945664. Its totient is φ = 14720768480000.

The previous prime is 18401185116763. The next prime is 18401185116779. The reversal of 18401185116775 is 57761158110481.

It is not a de Polignac number, because 18401185116775 - 2¹⁹ = 18401184592487 is a prime.

It is a super-3 number, since 3×18401185116775³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18401185116779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2380951 + ... + 6517000.

It is an arithmetic number, because the mean of its divisors is an integer number (1901478995472).

Almost surely, 2^{18401185116775} is an apocalyptic number.

18401185116775 is a deficient number, since it is larger than the sum of its proper divisors (4416562828889).

18401185116775 is an equidigital number, since it uses as much as digits as its factorization.

18401185116775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8980682 (or 8980677 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 55.

The spelling of 18401185116775 in words is "eighteen trillion, four hundred one billion, one hundred eighty-five million, one hundred sixteen thousand, seven hundred seventy-five".