12771312276 has 48 divisors (see below), whose sum is σ = 29896473600. Its totient is φ = 4243311072.

The previous prime is 12771312263. The next prime is 12771312283. The reversal of 12771312276 is 67221317721.

12771312276 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12771312276² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6375091 + ... + 6377093.

It is an arithmetic number, because the mean of its divisors is an integer number (622843200).

Almost surely, 2^12771312276 is an apocalyptic number.

It is an amenable number.

12771312276 is an abundant number, since it is smaller than the sum of its proper divisors (17125161324).

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

12771312276 is a wasteful number, since it uses less digits than its factorization.

12771312276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468 (or 3466 counting only the distinct ones).

The product of its digits is 49392, while the sum is 39.

Adding to 12771312276 its reverse (67221317721), we get a palindrome (79992629997).

Subtracting 12771312276 from its reverse (67221317721), we obtain a palindrome (54450005445).

The spelling of 12771312276 in words is "twelve billion, seven hundred seventy-one million, three hundred twelve thousand, two hundred seventy-six".