12876821268 has 24 divisors (see below), whose sum is σ = 30326722272. Its totient is φ = 4252158624.

The previous prime is 12876821263. The next prime is 12876821281. The reversal of 12876821268 is 86212867821.

It is a self number, because there is not a number n which added to its sum of digits gives 12876821268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12876821263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5013055 + ... + 5015622.

It is an arithmetic number, because the mean of its divisors is an integer number (1263613428).

Almost surely, 2^12876821268 is an apocalyptic number.

It is an amenable number.

12876821268 is an abundant number, since it is smaller than the sum of its proper divisors (17449901004).

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

12876821268 is a wasteful number, since it uses less digits than its factorization.

12876821268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10028791 (or 10028789 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 51.

The spelling of 12876821268 in words is "twelve billion, eight hundred seventy-six million, eight hundred twenty-one thousand, two hundred sixty-eight".