2644663423 has 2 divisors, whose sum is σ = 2644663424. Its totient is φ = 2644663422.

The previous prime is 2644663397. The next prime is 2644663433. The reversal of 2644663423 is 3243664462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2644663423 - 2¹³ = 2644655231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644663433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322331711 + 1322331712.

It is an arithmetic number, because the mean of its divisors is an integer number (1322331712).

Almost surely, 2^2644663423 is an apocalyptic number.

2644663423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644663423 is an equidigital number, since it uses as much as digits as its factorization.

2644663423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 40.

The square root of 2644663423 is about 51426.2911651229. The cubic root of 2644663423 is about 1382.8979608990.

The spelling of 2644663423 in words is "two billion, six hundred forty-four million, six hundred sixty-three thousand, four hundred twenty-three".