12644503607 has 8 divisors (see below), whose sum is σ = 12956968752. Its totient is φ = 12332232000.

The previous prime is 12644503601. The next prime is 12644503633. The reversal of 12644503607 is 70630544621.

It is a happy number.

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 12644503607 - 2¹⁴ = 12644487223 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 (12644503601) 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 7 ways as a sum of consecutive naturals, for example, 88628 + ... + 182054.

It is an arithmetic number, because the mean of its divisors is an integer number (1619621094).

Almost surely, 2^12644503607 is an apocalyptic number.

12644503607 is a deficient number, since it is larger than the sum of its proper divisors (312465145).

12644503607 is an equidigital number, since it uses as much as digits as its factorization.

12644503607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96769.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 12644503607 in words is "twelve billion, six hundred forty-four million, five hundred three thousand, six hundred seven".