12044403400 has 24 divisors (see below), whose sum is σ = 28003238370. Its totient is φ = 4817761280.

The previous prime is 12044403383. The next prime is 12044403407. The reversal of 12044403400 is 430444021.

It can be written as a sum of positive squares in 3 ways, for example, as 10468154596 + 1576248804 = 102314^2 + 39702^2 .

It is not an unprimeable number, because it can be changed into a prime (12044403407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30110809 + ... + 30111208.

Almost surely, 2^12044403400 is an apocalyptic number.

12044403400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12044403400 is an abundant number, since it is smaller than the sum of its proper divisors (15958834970).

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

12044403400 is a wasteful number, since it uses less digits than its factorization.

12044403400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60222033 (or 60222024 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 12044403400 its reverse (430444021), we get a palindrome (12474847421).

The spelling of 12044403400 in words is "twelve billion, forty-four million, four hundred three thousand, four hundred".