622694520449 has 2 divisors, whose sum is σ = 622694520450. Its totient is φ = 622694520448.

The previous prime is 622694520433. The next prime is 622694520451. The reversal of 622694520449 is 944025496226.

It is a happy number.

622694520449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 621349098049 + 1345422400 = 788257^2 + 36680^2 .

It is a cyclic number.

It is not a de Polignac number, because 622694520449 - 2⁴ = 622694520433 is a prime.

Together with 622694520451, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 622694520449.

It is not a weakly prime, because it can be changed into another prime (622694520419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311347260224 + 311347260225.

It is an arithmetic number, because the mean of its divisors is an integer number (311347260225).

Almost surely, 2^622694520449 is an apocalyptic number.

It is an amenable number.

622694520449 is a deficient number, since it is larger than the sum of its proper divisors (1).

622694520449 is an equidigital number, since it uses as much as digits as its factorization.

622694520449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 622694520449 in words is "six hundred twenty-two billion, six hundred ninety-four million, five hundred twenty thousand, four hundred forty-nine".