6636123415679 has 2 divisors, whose sum is σ = 6636123415680. Its totient is φ = 6636123415678.

The previous prime is 6636123415643. The next prime is 6636123415693. The reversal of 6636123415679 is 9765143216366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6636123415679 - 2²⁴ = 6636106638463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6636123415619) 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, 3318061707839 + 3318061707840.

It is an arithmetic number, because the mean of its divisors is an integer number (3318061707840).

Almost surely, 2^{6636123415679} is an apocalyptic number.

6636123415679 is a deficient number, since it is larger than the sum of its proper divisors (1).

6636123415679 is an equidigital number, since it uses as much as digits as its factorization.

6636123415679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 59.

The spelling of 6636123415679 in words is "six trillion, six hundred thirty-six billion, one hundred twenty-three million, four hundred fifteen thousand, six hundred seventy-nine".