12635560547 has 4 divisors (see below), whose sum is σ = 12635978160. Its totient is φ = 12635142936.

The previous prime is 12635560499. The next prime is 12635560549. The reversal of 12635560547 is 74506553621.

It is a happy number.

12635560547 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 12635560547 - 2¹⁰ = 12635559523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12635560498 and 12635560507.

It is not an unprimeable number, because it can be changed into a prime (12635560549) 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, 159548 + ... + 225225.

It is an arithmetic number, because the mean of its divisors is an integer number (3158994540).

Almost surely, 2^12635560547 is an apocalyptic number.

12635560547 is a deficient number, since it is larger than the sum of its proper divisors (417613).

12635560547 is an equidigital number, since it uses as much as digits as its factorization.

12635560547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417612.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 12635560547 in words is "twelve billion, six hundred thirty-five million, five hundred sixty thousand, five hundred forty-seven".