12644296933 has 4 divisors (see below), whose sum is σ = 12672839808. Its totient is φ = 12615754060.

The previous prime is 12644296913. The next prime is 12644296939. The reversal of 12644296933 is 33969244621.

It is a happy number.

12644296933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33969244621 = 13 ⋅2613018817.

It is a cyclic number.

It is not a de Polignac number, because 12644296933 - 2⁹ = 12644296421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644296939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14270773 + ... + 14271658.

It is an arithmetic number, because the mean of its divisors is an integer number (3168209952).

Almost surely, 2^12644296933 is an apocalyptic number.

It is an amenable number.

12644296933 is a deficient number, since it is larger than the sum of its proper divisors (28542875).

12644296933 is an equidigital number, since it uses as much as digits as its factorization.

12644296933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28542874.

The product of its digits is 1679616, while the sum is 49.

The spelling of 12644296933 in words is "twelve billion, six hundred forty-four million, two hundred ninety-six thousand, nine hundred thirty-three".