18399714363691 has 2 divisors, whose sum is σ = 18399714363692. Its totient is φ = 18399714363690.

The previous prime is 18399714363671. The next prime is 18399714363749. The reversal of 18399714363691 is 19636341799381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18399714363691 - 2¹³ = 18399714355499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18399714363691.

It is not a weakly prime, because it can be changed into another prime (18399714363671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9199857181845 + 9199857181846.

It is an arithmetic number, because the mean of its divisors is an integer number (9199857181846).

Almost surely, 2^{18399714363691} is an apocalyptic number.

18399714363691 is a deficient number, since it is larger than the sum of its proper divisors (1).

18399714363691 is an equidigital number, since it uses as much as digits as its factorization.

18399714363691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158723712, while the sum is 70.

The spelling of 18399714363691 in words is "eighteen trillion, three hundred ninety-nine billion, seven hundred fourteen million, three hundred sixty-three thousand, six hundred ninety-one".