12644152233167 has 32 divisors (see below), whose sum is σ = 15727614336000. Its totient is φ = 9898281347328.

The previous prime is 12644152233131. The next prime is 12644152233191. The reversal of 12644152233167 is 76133225144621.

It is a cyclic number.

It is not a de Polignac number, because 12644152233167 - 2²⁰ = 12644151184591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644152233197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1291163 + ... + 5191859.

It is an arithmetic number, because the mean of its divisors is an integer number (491487948000).

Almost surely, 2^{12644152233167} is an apocalyptic number.

12644152233167 is a deficient number, since it is larger than the sum of its proper divisors (3083462102833).

12644152233167 is a wasteful number, since it uses less digits than its factorization.

12644152233167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901095.

The product of its digits is 1451520, while the sum is 47.

Adding to 12644152233167 its reverse (76133225144621), we get a palindrome (88777377377788).

The spelling of 12644152233167 in words is "twelve trillion, six hundred forty-four billion, one hundred fifty-two million, two hundred thirty-three thousand, one hundred sixty-seven".