13422450399949 has 2 divisors, whose sum is σ = 13422450399950. Its totient is φ = 13422450399948.

The previous prime is 13422450399947. The next prime is 13422450400027. The reversal of 13422450399949 is 94999305422431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11323191350025 + 2099259049924 = 3364995^2 + 1448882^2 .

It is an emirp because it is prime and its reverse (94999305422431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13422450399949 - 2¹ = 13422450399947 is a prime.

Together with 13422450399947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13422450399947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6711225199974 + 6711225199975.

It is an arithmetic number, because the mean of its divisors is an integer number (6711225199975).

Almost surely, 2^{13422450399949} is an apocalyptic number.

It is an amenable number.

13422450399949 is a deficient number, since it is larger than the sum of its proper divisors (1).

13422450399949 is an equidigital number, since it uses as much as digits as its factorization.

13422450399949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75582720, while the sum is 64.

The spelling of 13422450399949 in words is "thirteen trillion, four hundred twenty-two billion, four hundred fifty million, three hundred ninety-nine thousand, nine hundred forty-nine".