22979919917 has 2 divisors, whose sum is σ = 22979919918. Its totient is φ = 22979919916.

The previous prime is 22979919913. The next prime is 22979919923. The reversal of 22979919917 is 71991997922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22504200196 + 475719721 = 150014^2 + 21811^2 .

It is a cyclic number.

It is not a de Polignac number, because 22979919917 - 2² = 22979919913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22979919913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11489959958 + 11489959959.

It is an arithmetic number, because the mean of its divisors is an integer number (11489959959).

Almost surely, 2^22979919917 is an apocalyptic number.

It is an amenable number.

22979919917 is a deficient number, since it is larger than the sum of its proper divisors (1).

22979919917 is an equidigital number, since it uses as much as digits as its factorization.

22979919917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11573604, while the sum is 65.

The spelling of 22979919917 in words is "twenty-two billion, nine hundred seventy-nine million, nine hundred nineteen thousand, nine hundred seventeen".