2644289328463 has 2 divisors, whose sum is σ = 2644289328464. Its totient is φ = 2644289328462.

The previous prime is 2644289328427. The next prime is 2644289328503. The reversal of 2644289328463 is 3648239824462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2644289328463 - 2¹⁷ = 2644289197391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644289328563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322144664231 + 1322144664232.

It is an arithmetic number, because the mean of its divisors is an integer number (1322144664232).

Almost surely, 2^{2644289328463} is an apocalyptic number.

2644289328463 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644289328463 is an equidigital number, since it uses as much as digits as its factorization.

2644289328463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95551488, while the sum is 61.

The spelling of 2644289328463 in words is "two trillion, six hundred forty-four billion, two hundred eighty-nine million, three hundred twenty-eight thousand, four hundred sixty-three".