12634645899 has 8 divisors (see below), whose sum is σ = 16854505360. Its totient is φ = 8418941856.

The previous prime is 12634645879. The next prime is 12634645909. The reversal of 12634645899 is 99854643621.

12634645899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12634645899 - 2⁸ = 12634645643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12634645819) 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 7 ways as a sum of consecutive naturals, for example, 1031752 + ... + 1043925.

It is an arithmetic number, because the mean of its divisors is an integer number (2106813170).

Almost surely, 2^12634645899 is an apocalyptic number.

12634645899 is a deficient number, since it is larger than the sum of its proper divisors (4219859461).

12634645899 is a wasteful number, since it uses less digits than its factorization.

12634645899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077709.

The product of its digits is 11197440, while the sum is 57.

The spelling of 12634645899 in words is "twelve billion, six hundred thirty-four million, six hundred forty-five thousand, eight hundred ninety-nine".