12726862722 has 80 divisors (see below), whose sum is σ = 32908267392. Its totient is φ = 3600910080.

The previous prime is 12726862717. The next prime is 12726862723. The reversal of 12726862722 is 22726862721.

12726862722 is a `hidden beast` number, since 12 + 7 + 2 + 6 + 8 + 627 + 2 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (12726862723) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 62322 + ... + 171282.

Almost surely, 2^12726862722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12726862722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16454133696).

12726862722 is an abundant number, since it is smaller than the sum of its proper divisors (20181404670).

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

12726862722 is a wasteful number, since it uses less digits than its factorization.

12726862722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109085 (or 109076 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

Subtracting 12726862722 from its reverse (22726862721), we obtain a palindrome (9999999999).

The spelling of 12726862722 in words is "twelve billion, seven hundred twenty-six million, eight hundred sixty-two thousand, seven hundred twenty-two".