6456642466559 has 2 divisors, whose sum is σ = 6456642466560. Its totient is φ = 6456642466558.

The previous prime is 6456642466531. The next prime is 6456642466567. The reversal of 6456642466559 is 9556642466546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6456642466559 - 2⁸ = 6456642466303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6456642460559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3228321233279 + 3228321233280.

It is an arithmetic number, because the mean of its divisors is an integer number (3228321233280).

Almost surely, 2^{6456642466559} is an apocalyptic number.

6456642466559 is a deficient number, since it is larger than the sum of its proper divisors (1).

6456642466559 is an equidigital number, since it uses as much as digits as its factorization.

6456642466559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744000, while the sum is 68.

The spelling of 6456642466559 in words is "six trillion, four hundred fifty-six billion, six hundred forty-two million, four hundred sixty-six thousand, five hundred fifty-nine".