12560438663 has 4 divisors (see below), whose sum is σ = 12643620528. Its totient is φ = 12477256800.

The previous prime is 12560438629. The next prime is 12560438689. The reversal of 12560438663 is 36683406521.

It is a happy number.

12560438663 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.

It is a cyclic number.

It is not a de Polignac number, because 12560438663 - 2¹² = 12560434567 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 (12560437663) 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, 41590706 + ... + 41591007.

It is an arithmetic number, because the mean of its divisors is an integer number (3160905132).

Almost surely, 2^12560438663 is an apocalyptic number.

12560438663 is a deficient number, since it is larger than the sum of its proper divisors (83181865).

12560438663 is an equidigital number, since it uses as much as digits as its factorization.

12560438663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83181864.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 12560438663 in words is "twelve billion, five hundred sixty million, four hundred thirty-eight thousand, six hundred sixty-three".