6648408322489 has 2 divisors, whose sum is σ = 6648408322490. Its totient is φ = 6648408322488.

The previous prime is 6648408322463. The next prime is 6648408322601. The reversal of 6648408322489 is 9842238048466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6557225461264 + 91182861225 = 2560708^2 + 301965^2 .

It is a cyclic number.

It is not a de Polignac number, because 6648408322489 - 2²⁷ = 6648274104761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6648408322489.

It is not a weakly prime, because it can be changed into another prime (6648408322289) 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, 3324204161244 + 3324204161245.

It is an arithmetic number, because the mean of its divisors is an integer number (3324204161245).

Almost surely, 2^{6648408322489} is an apocalyptic number.

It is an amenable number.

6648408322489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6648408322489 is an equidigital number, since it uses as much as digits as its factorization.

6648408322489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127401984, while the sum is 64.

The spelling of 6648408322489 in words is "six trillion, six hundred forty-eight billion, four hundred eight million, three hundred twenty-two thousand, four hundred eighty-nine".