12553043400 has 72 divisors (see below), whose sum is σ = 42157310130. Its totient is φ = 3347477760.

The previous prime is 12553043383. The next prime is 12553043407. The reversal of 12553043400 is 434035521.

12553043400 is a `hidden beast` number, since 1 + 255 + 3 + 0 + 4 + 3 + 400 = 666.

12553043400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 6231839364 + 6321204036 = 78942^2 + 79506^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (12553043407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3485157 + ... + 3488756.

Almost surely, 2^12553043400 is an apocalyptic number.

12553043400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12553043400 is an abundant number, since it is smaller than the sum of its proper divisors (29604266730).

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

12553043400 is a wasteful number, since it uses less digits than its factorization.

12553043400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973935 (or 6973923 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 12553043400 its reverse (434035521), we get a palindrome (12987078921).

The spelling of 12553043400 in words is "twelve billion, five hundred fifty-three million, forty-three thousand, four hundred".