22564471819 has 2 divisors, whose sum is σ = 22564471820. Its totient is φ = 22564471818.

The previous prime is 22564471781. The next prime is 22564471823. The reversal of 22564471819 is 91817446522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22564471819 is a prime.

It is a super-2 number, since 2×22564471819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22564471879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11282235909 + 11282235910.

It is an arithmetic number, because the mean of its divisors is an integer number (11282235910).

Almost surely, 2^22564471819 is an apocalyptic number.

22564471819 is a deficient number, since it is larger than the sum of its proper divisors (1).

22564471819 is an equidigital number, since it uses as much as digits as its factorization.

22564471819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The spelling of 22564471819 in words is "twenty-two billion, five hundred sixty-four million, four hundred seventy-one thousand, eight hundred nineteen".