22748861561 has 2 divisors, whose sum is σ = 22748861562. Its totient is φ = 22748861560.

The previous prime is 22748861539. The next prime is 22748861591. The reversal of 22748861561 is 16516884722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12107701225 + 10641160336 = 110035^2 + 103156^2 .

It is a cyclic number.

It is not a de Polignac number, because 22748861561 - 2⁶ = 22748861497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22748861591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11374430780 + 11374430781.

It is an arithmetic number, because the mean of its divisors is an integer number (11374430781).

Almost surely, 2^22748861561 is an apocalyptic number.

It is an amenable number.

22748861561 is a deficient number, since it is larger than the sum of its proper divisors (1).

22748861561 is an equidigital number, since it uses as much as digits as its factorization.

22748861561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 50.

The spelling of 22748861561 in words is "twenty-two billion, seven hundred forty-eight million, eight hundred sixty-one thousand, five hundred sixty-one".