12543310132 has 6 divisors (see below), whose sum is σ = 21950792738. Its totient is φ = 6271655064.

The previous prime is 12543310111. The next prime is 12543310139. The reversal of 12543310132 is 23101334521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12543104016 + 206116 = 111996^2 + 454^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12543310097 and 12543310106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543310139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1567913763 + ... + 1567913770.

Almost surely, 2^12543310132 is an apocalyptic number.

It is an amenable number.

12543310132 is a deficient number, since it is larger than the sum of its proper divisors (9407482606).

12543310132 is a wasteful number, since it uses less digits than its factorization.

12543310132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135827537 (or 3135827535 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 12543310132 its reverse (23101334521), we get a palindrome (35644644653).

The spelling of 12543310132 in words is "twelve billion, five hundred forty-three million, three hundred ten thousand, one hundred thirty-two".