22550918779 has 2 divisors, whose sum is σ = 22550918780. Its totient is φ = 22550918778.

The previous prime is 22550918641. The next prime is 22550918791. The reversal of 22550918779 is 97781905522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22550918779 - 2⁹ = 22550918267 is a prime.

It is not a weakly prime, because it can be changed into another prime (22550912779) 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, 11275459389 + 11275459390.

It is an arithmetic number, because the mean of its divisors is an integer number (11275459390).

Almost surely, 2^22550918779 is an apocalyptic number.

22550918779 is a deficient number, since it is larger than the sum of its proper divisors (1).

22550918779 is an equidigital number, since it uses as much as digits as its factorization.

22550918779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 22550918779 in words is "twenty-two billion, five hundred fifty million, nine hundred eighteen thousand, seven hundred seventy-nine".