6636123415643 has 2 divisors, whose sum is σ = 6636123415644. Its totient is φ = 6636123415642.

The previous prime is 6636123415627. The next prime is 6636123415679. The reversal of 6636123415643 is 3465143216366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6636123415643 - 2⁴ = 6636123415627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6636123415591 and 6636123415600.

It is not a weakly prime, because it can be changed into another prime (6636123415613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3318061707821 + 3318061707822.

It is an arithmetic number, because the mean of its divisors is an integer number (3318061707822).

Almost surely, 2^{6636123415643} is an apocalyptic number.

6636123415643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6636123415643 is an equidigital number, since it uses as much as digits as its factorization.

6636123415643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 50.

The spelling of 6636123415643 in words is "six trillion, six hundred thirty-six billion, one hundred twenty-three million, four hundred fifteen thousand, six hundred forty-three".