22355542549 has 2 divisors, whose sum is σ = 22355542550. Its totient is φ = 22355542548.

The previous prime is 22355542541. The next prime is 22355542613. The reversal of 22355542549 is 94524555322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15789681649 + 6565860900 = 125657^2 + 81030^2 .

It is a cyclic number.

It is not a de Polignac number, because 22355542549 - 2³ = 22355542541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22355542499 and 22355542508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22355542541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11177771274 + 11177771275.

It is an arithmetic number, because the mean of its divisors is an integer number (11177771275).

Almost surely, 2^22355542549 is an apocalyptic number.

It is an amenable number.

22355542549 is a deficient number, since it is larger than the sum of its proper divisors (1).

22355542549 is an equidigital number, since it uses as much as digits as its factorization.

22355542549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160000, while the sum is 46.

The spelling of 22355542549 in words is "twenty-two billion, three hundred fifty-five million, five hundred forty-two thousand, five hundred forty-nine".