22443443437 has 2 divisors, whose sum is σ = 22443443438. Its totient is φ = 22443443436.

The previous prime is 22443443423. The next prime is 22443443467. The reversal of 22443443437 is 73434434422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17344626601 + 5098816836 = 131699^2 + 71406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22443443437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22443443437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22443443467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11221721718 + 11221721719.

It is an arithmetic number, because the mean of its divisors is an integer number (11221721719).

Almost surely, 2^22443443437 is an apocalyptic number.

It is an amenable number.

22443443437 is a deficient number, since it is larger than the sum of its proper divisors (1).

22443443437 is an equidigital number, since it uses as much as digits as its factorization.

22443443437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 40.

Adding to 22443443437 its reverse (73434434422), we get a palindrome (95877877859).

The spelling of 22443443437 in words is "twenty-two billion, four hundred forty-three million, four hundred forty-three thousand, four hundred thirty-seven".