12634843668 has 24 divisors (see below), whose sum is σ = 31032949920. Its totient is φ = 3989950560.

The previous prime is 12634843643. The next prime is 12634843703. The reversal of 12634843668 is 86634843621.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12634843668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27707763 + ... + 27708218.

It is an arithmetic number, because the mean of its divisors is an integer number (1293039580).

Almost surely, 2^12634843668 is an apocalyptic number.

It is an amenable number.

12634843668 is an abundant number, since it is smaller than the sum of its proper divisors (18398106252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12634843668 is a wasteful number, since it uses less digits than its factorization.

12634843668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55416007 (or 55416005 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 51.

The spelling of 12634843668 in words is "twelve billion, six hundred thirty-four million, eight hundred forty-three thousand, six hundred sixty-eight".