22405898549 has 2 divisors, whose sum is σ = 22405898550. Its totient is φ = 22405898548.

The previous prime is 22405898513. The next prime is 22405898621. The reversal of 22405898549 is 94589850422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13993707025 + 8412191524 = 118295^2 + 91718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22405898549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22405898494 and 22405898503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22405838549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11202949274 + 11202949275.

It is an arithmetic number, because the mean of its divisors is an integer number (11202949275).

Almost surely, 2^22405898549 is an apocalyptic number.

It is an amenable number.

22405898549 is a deficient number, since it is larger than the sum of its proper divisors (1).

22405898549 is an equidigital number, since it uses as much as digits as its factorization.

22405898549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 22405898549 in words is "twenty-two billion, four hundred five million, eight hundred ninety-eight thousand, five hundred forty-nine".