28565322345559 has 2 divisors, whose sum is σ = 28565322345560. Its totient is φ = 28565322345558.

The previous prime is 28565322345551. The next prime is 28565322345577. The reversal of 28565322345559 is 95554322356582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28565322345559 - 2³ = 28565322345551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28565322345559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28565322345551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14282661172779 + 14282661172780.

It is an arithmetic number, because the mean of its divisors is an integer number (14282661172780).

Almost surely, 2^{28565322345559} is an apocalyptic number.

28565322345559 is a deficient number, since it is larger than the sum of its proper divisors (1).

28565322345559 is an equidigital number, since it uses as much as digits as its factorization.

28565322345559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800000, while the sum is 64.

The spelling of 28565322345559 in words is "twenty-eight trillion, five hundred sixty-five billion, three hundred twenty-two million, three hundred forty-five thousand, five hundred fifty-nine".