18669325936579 has 2 divisors, whose sum is σ = 18669325936580. Its totient is φ = 18669325936578.

The previous prime is 18669325936577. The next prime is 18669325936603. The reversal of 18669325936579 is 97563952396681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18669325936579 - 2¹ = 18669325936577 is a prime.

Together with 18669325936577, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 18669325936499 and 18669325936508.

It is not a weakly prime, because it can be changed into another prime (18669325936577) 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, 9334662968289 + 9334662968290.

It is an arithmetic number, because the mean of its divisors is an integer number (9334662968290).

Almost surely, 2^{18669325936579} is an apocalyptic number.

18669325936579 is a deficient number, since it is larger than the sum of its proper divisors (1).

18669325936579 is an equidigital number, since it uses as much as digits as its factorization.

18669325936579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3968092800, while the sum is 79.

The spelling of 18669325936579 in words is "eighteen trillion, six hundred sixty-nine billion, three hundred twenty-five million, nine hundred thirty-six thousand, five hundred seventy-nine".