12634568694 has 96 divisors (see below), whose sum is σ = 30290176800. Its totient is φ = 3774228480.

The previous prime is 12634568693. The next prime is 12634568731. The reversal of 12634568694 is 49686543621.

12634568694 is a `hidden beast` number, since 1 + 26 + 3 + 456 + 86 + 94 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12634568694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12634568693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7206522 + ... + 7208274.

It is an arithmetic number, because the mean of its divisors is an integer number (315522675).

Almost surely, 2^12634568694 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12634568694, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15145088400).

12634568694 is an abundant number, since it is smaller than the sum of its proper divisors (17655608106).

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

12634568694 is a wasteful number, since it uses less digits than its factorization.

12634568694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270 (or 2267 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 12634568694 in words is "twelve billion, six hundred thirty-four million, five hundred sixty-eight thousand, six hundred ninety-four".