18222086212591 has 2 divisors, whose sum is σ = 18222086212592. Its totient is φ = 18222086212590.

The previous prime is 18222086212579. The next prime is 18222086212633. The reversal of 18222086212591 is 19521268022281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18222086212591 - 2¹⁷ = 18222086081519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18222086212531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9111043106295 + 9111043106296.

It is an arithmetic number, because the mean of its divisors is an integer number (9111043106296).

Almost surely, 2^{18222086212591} is an apocalyptic number.

18222086212591 is a deficient number, since it is larger than the sum of its proper divisors (1).

18222086212591 is an equidigital number, since it uses as much as digits as its factorization.

18222086212591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 18222086212591 in words is "eighteen trillion, two hundred twenty-two billion, eighty-six million, two hundred twelve thousand, five hundred ninety-one".