22217688679 has 2 divisors, whose sum is σ = 22217688680. Its totient is φ = 22217688678.

The previous prime is 22217688653. The next prime is 22217688683. The reversal of 22217688679 is 97688671222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22217688679 - 2⁹ = 22217688167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22217688629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11108844339 + 11108844340.

It is an arithmetic number, because the mean of its divisors is an integer number (11108844340).

Almost surely, 2^22217688679 is an apocalyptic number.

22217688679 is a deficient number, since it is larger than the sum of its proper divisors (1).

22217688679 is an equidigital number, since it uses as much as digits as its factorization.

22217688679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 58.

The spelling of 22217688679 in words is "twenty-two billion, two hundred seventeen million, six hundred eighty-eight thousand, six hundred seventy-nine".