12775634688 has 144 divisors (see below), whose sum is σ = 36049750016. Its totient is φ = 4009512960.

The previous prime is 12775634659. The next prime is 12775634689. The reversal of 12775634688 is 88643657721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12775634689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 873645 + ... + 888147.

Almost surely, 2^12775634688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12775634688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18024875008).

12775634688 is an abundant number, since it is smaller than the sum of its proper divisors (23274115328).

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

12775634688 is a wasteful number, since it uses less digits than its factorization.

12775634688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14590 (or 14576 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 57.

The spelling of 12775634688 in words is "twelve billion, seven hundred seventy-five million, six hundred thirty-four thousand, six hundred eighty-eight".