18080376987103 has 4 divisors (see below), whose sum is σ = 18500850870568. Its totient is φ = 17659903103640.

The previous prime is 18080376986989. The next prime is 18080376987193. The reversal of 18080376987103 is 30178967308081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18080376987103 - 2³³ = 18071787052511 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 (18080376987193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210236941668 + ... + 210236941753.

It is an arithmetic number, because the mean of its divisors is an integer number (4625212717642).

Almost surely, 2^{18080376987103} is an apocalyptic number.

18080376987103 is a deficient number, since it is larger than the sum of its proper divisors (420473883465).

18080376987103 is an equidigital number, since it uses as much as digits as its factorization.

18080376987103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420473883464.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 18080376987103 in words is "eighteen trillion, eighty billion, three hundred seventy-six million, nine hundred eighty-seven thousand, one hundred three".