2644452850649 has 2 divisors, whose sum is σ = 2644452850650. Its totient is φ = 2644452850648.

The previous prime is 2644452850619. The next prime is 2644452850651. The reversal of 2644452850649 is 9460582544462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1470495769600 + 1173957081049 = 1212640^2 + 1083493^2 .

It is a cyclic number.

It is not a de Polignac number, because 2644452850649 - 2⁸ = 2644452850393 is a prime.

Together with 2644452850651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2644452850609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322226425324 + 1322226425325.

It is an arithmetic number, because the mean of its divisors is an integer number (1322226425325).

Almost surely, 2^{2644452850649} is an apocalyptic number.

It is an amenable number.

2644452850649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644452850649 is an equidigital number, since it uses as much as digits as its factorization.

2644452850649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66355200, while the sum is 59.

The spelling of 2644452850649 in words is "two trillion, six hundred forty-four billion, four hundred fifty-two million, eight hundred fifty thousand, six hundred forty-nine".