6564109356559 has 2 divisors, whose sum is σ = 6564109356560. Its totient is φ = 6564109356558.

The previous prime is 6564109356443. The next prime is 6564109356643. The reversal of 6564109356559 is 9556539014656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6564109356559 - 2²¹ = 6564107259407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6564109356559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6564109356359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282054678279 + 3282054678280.

It is an arithmetic number, because the mean of its divisors is an integer number (3282054678280).

Almost surely, 2^{6564109356559} is an apocalyptic number.

6564109356559 is a deficient number, since it is larger than the sum of its proper divisors (1).

6564109356559 is an equidigital number, since it uses as much as digits as its factorization.

6564109356559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220000, while the sum is 64.

The spelling of 6564109356559 in words is "six trillion, five hundred sixty-four billion, one hundred nine million, three hundred fifty-six thousand, five hundred fifty-nine".