22554640189 has 2 divisors, whose sum is σ = 22554640190. Its totient is φ = 22554640188.

The previous prime is 22554640181. The next prime is 22554640267. The reversal of 22554640189 is 98104645522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16099803225 + 6454836964 = 126885^2 + 80342^2 .

It is a cyclic number.

It is not a de Polignac number, because 22554640189 - 2³ = 22554640181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22554640181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11277320094 + 11277320095.

It is an arithmetic number, because the mean of its divisors is an integer number (11277320095).

Almost surely, 2^22554640189 is an apocalyptic number.

It is an amenable number.

22554640189 is a deficient number, since it is larger than the sum of its proper divisors (1).

22554640189 is an equidigital number, since it uses as much as digits as its factorization.

22554640189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 22554640189 in words is "twenty-two billion, five hundred fifty-four million, six hundred forty thousand, one hundred eighty-nine".