12844040380 has 12 divisors (see below), whose sum is σ = 26972484840. Its totient is φ = 5137616144.

The previous prime is 12844040353. The next prime is 12844040383. The reversal of 12844040380 is 8304044821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12844040383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321100990 + ... + 321101029.

It is an arithmetic number, because the mean of its divisors is an integer number (2247707070).

Almost surely, 2^12844040380 is an apocalyptic number.

12844040380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12844040380 is an abundant number, since it is smaller than the sum of its proper divisors (14128444460).

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

12844040380 is a wasteful number, since it uses less digits than its factorization.

12844040380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642202028 (or 642202026 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The spelling of 12844040380 in words is "twelve billion, eight hundred forty-four million, forty thousand, three hundred eighty".