22242940549 has 2 divisors, whose sum is σ = 22242940550. Its totient is φ = 22242940548.

The previous prime is 22242940547. The next prime is 22242940553. The reversal of 22242940549 is 94504924222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18775850625 + 3467089924 = 137025^2 + 58882^2 .

It is a cyclic number.

It is not a de Polignac number, because 22242940549 - 2¹ = 22242940547 is a prime.

Together with 22242940547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22242940547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11121470274 + 11121470275.

It is an arithmetic number, because the mean of its divisors is an integer number (11121470275).

Almost surely, 2^22242940549 is an apocalyptic number.

It is an amenable number.

22242940549 is a deficient number, since it is larger than the sum of its proper divisors (1).

22242940549 is an equidigital number, since it uses as much as digits as its factorization.

22242940549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 22242940549 in words is "twenty-two billion, two hundred forty-two million, nine hundred forty thousand, five hundred forty-nine".