6564444659 has 2 divisors, whose sum is σ = 6564444660. Its totient is φ = 6564444658.

The previous prime is 6564444643. The next prime is 6564444661. The reversal of 6564444659 is 9564444656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6564444659 - 2⁴ = 6564444643 is a prime.

Together with 6564444661, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6564444659.

It is not a weakly prime, because it can be changed into another prime (6564444619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282222329 + 3282222330.

It is an arithmetic number, because the mean of its divisors is an integer number (3282222330).

Almost surely, 2^6564444659 is an apocalyptic number.

6564444659 is a deficient number, since it is larger than the sum of its proper divisors (1).

6564444659 is an equidigital number, since it uses as much as digits as its factorization.

6564444659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12441600, while the sum is 53.

The square root of 6564444659 is about 81021.2605369726. The cubic root of 6564444659 is about 1872.4030093737.

The spelling of 6564444659 in words is "six billion, five hundred sixty-four million, four hundred forty-four thousand, six hundred fifty-nine".