18000111900671 has 2 divisors, whose sum is σ = 18000111900672. Its totient is φ = 18000111900670.

The previous prime is 18000111900637. The next prime is 18000111900691. The reversal of 18000111900671 is 17600911100081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18000111900671 - 2¹⁰ = 18000111899647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18000111900691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9000055950335 + 9000055950336.

It is an arithmetic number, because the mean of its divisors is an integer number (9000055950336).

Almost surely, 2^{18000111900671} is an apocalyptic number.

18000111900671 is a deficient number, since it is larger than the sum of its proper divisors (1).

18000111900671 is an equidigital number, since it uses as much as digits as its factorization.

18000111900671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 35.

The spelling of 18000111900671 in words is "eighteen trillion, one hundred eleven million, nine hundred thousand, six hundred seventy-one".