12129238552 has 16 divisors (see below), whose sum is σ = 22756822200. Its totient is φ = 6060752640.

The previous prime is 12129238549. The next prime is 12129238559. The reversal of 12129238552 is 25583292121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129238559) 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 in 3 ways as a sum of consecutive naturals, for example, 469977 + ... + 495112.

Almost surely, 2^12129238552 is an apocalyptic number.

It is an amenable number.

12129238552 is a deficient number, since it is larger than the sum of its proper divisors (10627583648).

12129238552 is a wasteful number, since it uses less digits than its factorization.

12129238552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966666 (or 966662 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The spelling of 12129238552 in words is "twelve billion, one hundred twenty-nine million, two hundred thirty-eight thousand, five hundred fifty-two".