22041556549 has 2 divisors, whose sum is σ = 22041556550. Its totient is φ = 22041556548.

The previous prime is 22041556541. The next prime is 22041556561. The reversal of 22041556549 is 94565514022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11533256449 + 10508300100 = 107393^2 + 102510^2 .

It is a cyclic number.

It is not a de Polignac number, because 22041556549 - 2³ = 22041556541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22041556541) 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, 11020778274 + 11020778275.

It is an arithmetic number, because the mean of its divisors is an integer number (11020778275).

Almost surely, 2^22041556549 is an apocalyptic number.

It is an amenable number.

22041556549 is a deficient number, since it is larger than the sum of its proper divisors (1).

22041556549 is an equidigital number, since it uses as much as digits as its factorization.

22041556549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 22041556549 in words is "twenty-two billion, forty-one million, five hundred fifty-six thousand, five hundred forty-nine".