22768783309 has 2 divisors, whose sum is σ = 22768783310. Its totient is φ = 22768783308.

The previous prime is 22768783283. The next prime is 22768783357. The reversal of 22768783309 is 90338786722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22154834025 + 613949284 = 148845^2 + 24778^2 .

It is a cyclic number.

It is not a de Polignac number, because 22768783309 - 2⁹ = 22768782797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22768783309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22768783379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11384391654 + 11384391655.

It is an arithmetic number, because the mean of its divisors is an integer number (11384391655).

Almost surely, 2^22768783309 is an apocalyptic number.

It is an amenable number.

22768783309 is a deficient number, since it is larger than the sum of its proper divisors (1).

22768783309 is an equidigital number, since it uses as much as digits as its factorization.

22768783309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 22768783309 in words is "twenty-two billion, seven hundred sixty-eight million, seven hundred eighty-three thousand, three hundred nine".