22788251309 has 2 divisors, whose sum is σ = 22788251310. Its totient is φ = 22788251308.

The previous prime is 22788251303. The next prime is 22788251429. The reversal of 22788251309 is 90315288722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17114395684 + 5673855625 = 130822^2 + 75325^2 .

It is a cyclic number.

It is not a de Polignac number, because 22788251309 - 2²⁸ = 22519815853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22788251303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11394125654 + 11394125655.

It is an arithmetic number, because the mean of its divisors is an integer number (11394125655).

Almost surely, 2^22788251309 is an apocalyptic number.

It is an amenable number.

22788251309 is a deficient number, since it is larger than the sum of its proper divisors (1).

22788251309 is an equidigital number, since it uses as much as digits as its factorization.

22788251309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 22788251309 in words is "twenty-two billion, seven hundred eighty-eight million, two hundred fifty-one thousand, three hundred nine".