22378786889 has 2 divisors, whose sum is σ = 22378786890. Its totient is φ = 22378786888.

The previous prime is 22378786883. The next prime is 22378786909. The reversal of 22378786889 is 98868787322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22121505289 + 257281600 = 148733^2 + 16040^2 .

It is a cyclic number.

It is not a de Polignac number, because 22378786889 - 2²⁴ = 22362009673 is a prime.

It is not a weakly prime, because it can be changed into another prime (22378786883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11189393444 + 11189393445.

It is an arithmetic number, because the mean of its divisors is an integer number (11189393445).

Almost surely, 2^22378786889 is an apocalyptic number.

It is an amenable number.

22378786889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22378786889 is an equidigital number, since it uses as much as digits as its factorization.

22378786889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130056192, while the sum is 68.

The spelling of 22378786889 in words is "twenty-two billion, three hundred seventy-eight million, seven hundred eighty-six thousand, eight hundred eighty-nine".