22188565840907 has 2 divisors, whose sum is σ = 22188565840908. Its totient is φ = 22188565840906.

The previous prime is 22188565840891. The next prime is 22188565840943. The reversal of 22188565840907 is 70904856588122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22188565840907 - 2⁴ = 22188565840891 is a prime.

It is not a weakly prime, because it can be changed into another prime (22188565849907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11094282920453 + 11094282920454.

It is an arithmetic number, because the mean of its divisors is an integer number (11094282920454).

Almost surely, 2^{22188565840907} is an apocalyptic number.

22188565840907 is a deficient number, since it is larger than the sum of its proper divisors (1).

22188565840907 is an equidigital number, since it uses as much as digits as its factorization.

22188565840907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77414400, while the sum is 65.

The spelling of 22188565840907 in words is "twenty-two trillion, one hundred eighty-eight billion, five hundred sixty-five million, eight hundred forty thousand, nine hundred seven".