18264142416791 has 2 divisors, whose sum is σ = 18264142416792. Its totient is φ = 18264142416790.

The previous prime is 18264142416713. The next prime is 18264142416809. The reversal of 18264142416791 is 19761424146281.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18264142416791 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18264142410791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9132071208395 + 9132071208396.

It is an arithmetic number, because the mean of its divisors is an integer number (9132071208396).

Almost surely, 2^{18264142416791} is an apocalyptic number.

18264142416791 is a deficient number, since it is larger than the sum of its proper divisors (1).

18264142416791 is an equidigital number, since it uses as much as digits as its factorization.

18264142416791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 56.

The spelling of 18264142416791 in words is "eighteen trillion, two hundred sixty-four billion, one hundred forty-two million, four hundred sixteen thousand, seven hundred ninety-one".