22256516573 has 2 divisors, whose sum is σ = 22256516574. Its totient is φ = 22256516572.

The previous prime is 22256516521. The next prime is 22256516677. The reversal of 22256516573 is 37561565222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18704118169 + 3552398404 = 136763^2 + 59602^2 .

It is a cyclic number.

It is not a de Polignac number, because 22256516573 - 2⁶ = 22256516509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22256536573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11128258286 + 11128258287.

It is an arithmetic number, because the mean of its divisors is an integer number (11128258287).

Almost surely, 2^22256516573 is an apocalyptic number.

It is an amenable number.

22256516573 is a deficient number, since it is larger than the sum of its proper divisors (1).

22256516573 is an equidigital number, since it uses as much as digits as its factorization.

22256516573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 44.

The spelling of 22256516573 in words is "twenty-two billion, two hundred fifty-six million, five hundred sixteen thousand, five hundred seventy-three".