18000011000089 has 2 divisors, whose sum is σ = 18000011000090. Its totient is φ = 18000011000088.

The previous prime is 18000011000087. The next prime is 18000011000131. The reversal of 18000011000089 is 98000011000081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17991340224400 + 8670775689 = 4241620^2 + 93117^2 .

It is a cyclic number.

It is not a de Polignac number, because 18000011000089 - 2¹ = 18000011000087 is a prime.

Together with 18000011000087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18000011000087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9000005500044 + 9000005500045.

It is an arithmetic number, because the mean of its divisors is an integer number (9000005500045).

Almost surely, 2^{18000011000089} is an apocalyptic number.

It is an amenable number.

18000011000089 is a deficient number, since it is larger than the sum of its proper divisors (1).

18000011000089 is an equidigital number, since it uses as much as digits as its factorization.

18000011000089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 28.

The spelling of 18000011000089 in words is "eighteen trillion, eleven million, eighty-nine", and thus it is an aban number and an uban number.