12644251332611 has 8 divisors (see below), whose sum is σ = 12989219156880. Its totient is φ = 12299453576928.

The previous prime is 12644251332577. The next prime is 12644251332613. The reversal of 12644251332611 is 11623315244621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12644251332611 - 2¹⁸ = 12644251070467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12644251332613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42366416 + ... + 42663821.

It is an arithmetic number, because the mean of its divisors is an integer number (1623652394610).

Almost surely, 2^{12644251332611} is an apocalyptic number.

12644251332611 is a deficient number, since it is larger than the sum of its proper divisors (344967824269).

12644251332611 is an equidigital number, since it uses as much as digits as its factorization.

12644251332611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85034293.

The product of its digits is 207360, while the sum is 41.

The spelling of 12644251332611 in words is "twelve trillion, six hundred forty-four billion, two hundred fifty-one million, three hundred thirty-two thousand, six hundred eleven".