12641047817 has 16 divisors (see below), whose sum is σ = 13179727872. Its totient is φ = 12113115840.

The previous prime is 12641047813. The next prime is 12641047831. The reversal of 12641047817 is 71874014621.

12641047817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12641047817 - 2² = 12641047813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12641047813) 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 15 ways as a sum of consecutive naturals, for example, 3184568 + ... + 3188534.

It is an arithmetic number, because the mean of its divisors is an integer number (823732992).

Almost surely, 2^12641047817 is an apocalyptic number.

It is an amenable number.

12641047817 is a deficient number, since it is larger than the sum of its proper divisors (538680055).

12641047817 is a wasteful number, since it uses less digits than its factorization.

12641047817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288.

The product of its (nonzero) digits is 75264, while the sum is 41.

The spelling of 12641047817 in words is "twelve billion, six hundred forty-one million, forty-seven thousand, eight hundred seventeen".