18649371076579 has 2 divisors, whose sum is σ = 18649371076580. Its totient is φ = 18649371076578.

The previous prime is 18649371076549. The next prime is 18649371076591. The reversal of 18649371076579 is 97567017394681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18649371076579 - 2⁵ = 18649371076547 is a prime.

It is not a weakly prime, because it can be changed into another prime (18649371076549) 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, 9324685538289 + 9324685538290.

It is an arithmetic number, because the mean of its divisors is an integer number (9324685538290).

Almost surely, 2^{18649371076579} is an apocalyptic number.

18649371076579 is a deficient number, since it is larger than the sum of its proper divisors (1).

18649371076579 is an equidigital number, since it uses as much as digits as its factorization.

18649371076579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480090240, while the sum is 73.

The spelling of 18649371076579 in words is "eighteen trillion, six hundred forty-nine billion, three hundred seventy-one million, seventy-six thousand, five hundred seventy-nine".