18018522278039 has 2 divisors, whose sum is σ = 18018522278040. Its totient is φ = 18018522278038.

The previous prime is 18018522278023. The next prime is 18018522278051. The reversal of 18018522278039 is 93087222581081.

It is a strong prime.

It is an emirp because it is prime and its reverse (93087222581081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18018522278039 - 2⁴ = 18018522278023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18018522272039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9009261139019 + 9009261139020.

It is an arithmetic number, because the mean of its divisors is an integer number (9009261139020).

Almost surely, 2^{18018522278039} is an apocalyptic number.

18018522278039 is a deficient number, since it is larger than the sum of its proper divisors (1).

18018522278039 is an equidigital number, since it uses as much as digits as its factorization.

18018522278039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 18018522278039 in words is "eighteen trillion, eighteen billion, five hundred twenty-two million, two hundred seventy-eight thousand, thirty-nine".