12840268844 has 36 divisors (see below), whose sum is σ = 25706200464. Its totient is φ = 5577666816.

The previous prime is 12840268807. The next prime is 12840268873. The reversal of 12840268844 is 44886204821.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 412184 + ... + 442239.

It is an arithmetic number, because the mean of its divisors is an integer number (714061124).

Almost surely, 2^12840268844 is an apocalyptic number.

It is an amenable number.

12840268844 is an abundant number, since it is smaller than the sum of its proper divisors (12865931620).

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

12840268844 is a wasteful number, since it uses less digits than its factorization.

12840268844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854474 (or 854455 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 47.

The spelling of 12840268844 in words is "twelve billion, eight hundred forty million, two hundred sixty-eight thousand, eight hundred forty-four".