12643440052322 has 12 divisors (see below), whose sum is σ = 19439007033858. Its totient is φ = 6167531731200.

The previous prime is 12643440052297. The next prime is 12643440052349. The reversal of 12643440052322 is 22325004434621.

It can be written as a sum of positive squares in 3 ways, for example, as 3021029848321 + 9622410204001 = 1738111^2 + 3102001^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1880341679 + ... + 1880348402.

Almost surely, 2^{12643440052322} is an apocalyptic number.

12643440052322 is a deficient number, since it is larger than the sum of its proper divisors (6795566981536).

12643440052322 is an equidigital number, since it uses as much as digits as its factorization.

12643440052322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3760690165 (or 3760690124 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 38.

Adding to 12643440052322 its reverse (22325004434621), we get a palindrome (34968444486943).

The spelling of 12643440052322 in words is "twelve trillion, six hundred forty-three billion, four hundred forty million, fifty-two thousand, three hundred twenty-two".