22761388549 has 2 divisors, whose sum is σ = 22761388550. Its totient is φ = 22761388548.

The previous prime is 22761388513. The next prime is 22761388567. The reversal of 22761388549 is 94588316722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20769997924 + 1991390625 = 144118^2 + 44625^2 .

It is a cyclic number.

It is not a de Polignac number, because 22761388549 - 2²¹ = 22759291397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22761388549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22761388589) 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, 11380694274 + 11380694275.

It is an arithmetic number, because the mean of its divisors is an integer number (11380694275).

Almost surely, 2^22761388549 is an apocalyptic number.

It is an amenable number.

22761388549 is a deficient number, since it is larger than the sum of its proper divisors (1).

22761388549 is an equidigital number, since it uses as much as digits as its factorization.

22761388549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 55.

The spelling of 22761388549 in words is "twenty-two billion, seven hundred sixty-one million, three hundred eighty-eight thousand, five hundred forty-nine".