13122333649 has 2 divisors, whose sum is σ = 13122333650. Its totient is φ = 13122333648.

The previous prime is 13122333647. The next prime is 13122333659. The reversal of 13122333649 is 94633322131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9553107600 + 3569226049 = 97740^2 + 59743^2 .

It is a cyclic number.

It is not a de Polignac number, because 13122333649 - 2¹ = 13122333647 is a prime.

Together with 13122333647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13122333647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561166824 + 6561166825.

It is an arithmetic number, because the mean of its divisors is an integer number (6561166825).

Almost surely, 2^13122333649 is an apocalyptic number.

It is an amenable number.

13122333649 is a deficient number, since it is larger than the sum of its proper divisors (1).

13122333649 is an equidigital number, since it uses as much as digits as its factorization.

13122333649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 37.

The spelling of 13122333649 in words is "thirteen billion, one hundred twenty-two million, three hundred thirty-three thousand, six hundred forty-nine".