12644616303 has 24 divisors (see below), whose sum is σ = 21096902736. Its totient is φ = 7212614400.

The previous prime is 12644616247. The next prime is 12644616317. The reversal of 12644616303 is 30361644621.

12644616303 is a `hidden beast` number, since 1 + 2 + 6 + 4 + 4 + 616 + 30 + 3 = 666.

It is not a de Polignac number, because 12644616303 - 2²¹ = 12642519151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644616503) 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 in 23 ways as a sum of consecutive naturals, for example, 3754888 + ... + 3758253.

It is an arithmetic number, because the mean of its divisors is an integer number (879037614).

Almost surely, 2^12644616303 is an apocalyptic number.

12644616303 is a deficient number, since it is larger than the sum of its proper divisors (8452286433).

12644616303 is a wasteful number, since it uses less digits than its factorization.

12644616303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513175 (or 7513172 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 12644616303 in words is "twelve billion, six hundred forty-four million, six hundred sixteen thousand, three hundred three".