22553155549 has 2 divisors, whose sum is σ = 22553155550. Its totient is φ = 22553155548.

The previous prime is 22553155529. The next prime is 22553155577. The reversal of 22553155549 is 94555135522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22009799449 + 543356100 = 148357^2 + 23310^2 .

It is a cyclic number.

It is not a de Polignac number, because 22553155549 - 2¹⁷ = 22553024477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22553155499 and 22553155508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22553155529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11276577774 + 11276577775.

It is an arithmetic number, because the mean of its divisors is an integer number (11276577775).

Almost surely, 2^22553155549 is an apocalyptic number.

It is an amenable number.

22553155549 is a deficient number, since it is larger than the sum of its proper divisors (1).

22553155549 is an equidigital number, since it uses as much as digits as its factorization.

22553155549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350000, while the sum is 46.

The spelling of 22553155549 in words is "twenty-two billion, five hundred fifty-three million, one hundred fifty-five thousand, five hundred forty-nine".