12432332172 has 96 divisors (see below), whose sum is σ = 32076174592. Its totient is φ = 3723584256.

The previous prime is 12432332167. The next prime is 12432332173. The reversal of 12432332172 is 27123323421.

It is not an unprimeable number, because it can be changed into a prime (12432332173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2056338 + ... + 2062374.

Almost surely, 2^12432332172 is an apocalyptic number.

12432332172 is a gapful number since it is divisible by the number (12) 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 12432332172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16038087296).

12432332172 is an abundant number, since it is smaller than the sum of its proper divisors (19643842420).

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

12432332172 is a wasteful number, since it uses less digits than its factorization.

12432332172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6407 (or 6405 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

Adding to 12432332172 its reverse (27123323421), we get a palindrome (39555655593).

The spelling of 12432332172 in words is "twelve billion, four hundred thirty-two million, three hundred thirty-two thousand, one hundred seventy-two".