22509609979 has 2 divisors, whose sum is σ = 22509609980. Its totient is φ = 22509609978.

The previous prime is 22509609977. The next prime is 22509610001. The reversal of 22509609979 is 97990690522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22509609979 - 2¹ = 22509609977 is a prime.

Together with 22509609977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22509609973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11254804989 + 11254804990.

It is an arithmetic number, because the mean of its divisors is an integer number (11254804990).

Almost surely, 2^22509609979 is an apocalyptic number.

22509609979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22509609979 is an equidigital number, since it uses as much as digits as its factorization.

22509609979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5511240, while the sum is 58.

The spelling of 22509609979 in words is "twenty-two billion, five hundred nine million, six hundred nine thousand, nine hundred seventy-nine".