12043091256 has 64 divisors (see below), whose sum is σ = 34531418880. Its totient is φ = 3428624640.

The previous prime is 12043091243. The next prime is 12043091257. The reversal of 12043091256 is 65219034021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12043091257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80346 + ... + 174761.

It is an arithmetic number, because the mean of its divisors is an integer number (539553420).

Almost surely, 2^12043091256 is an apocalyptic number.

It is an amenable number.

12043091256 is an abundant number, since it is smaller than the sum of its proper divisors (22488327624).

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

12043091256 is a wasteful number, since it uses less digits than its factorization.

12043091256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255404 (or 255400 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 12043091256 in words is "twelve billion, forty-three million, ninety-one thousand, two hundred fifty-six".