12543034300 has 72 divisors (see below), whose sum is σ = 28744410240. Its totient is φ = 4737643200.

The previous prime is 12543034271. The next prime is 12543034303. The reversal of 12543034300 is 343034521.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543034303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 580287 + ... + 601513.

It is an arithmetic number, because the mean of its divisors is an integer number (399227920).

Almost surely, 2^12543034300 is an apocalyptic number.

12543034300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12543034300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14372205120).

12543034300 is an abundant number, since it is smaller than the sum of its proper divisors (16201375940).

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

12543034300 is a wasteful number, since it uses less digits than its factorization.

12543034300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21571 (or 21564 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 12543034300 its reverse (343034521), we get a palindrome (12886068821).

The spelling of 12543034300 in words is "twelve billion, five hundred forty-three million, thirty-four thousand, three hundred".