12443512432 has 40 divisors (see below), whose sum is σ = 26024018384. Its totient is φ = 5729854464.

The previous prime is 12443512429. The next prime is 12443512441. The reversal of 12443512432 is 23421534421.

It is a junction number, because it is equal to n+sod(n) for n = 12443512394 and 12443512403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20983 + ... + 159145.

Almost surely, 2^12443512432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12443512432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13012009192).

12443512432 is an abundant number, since it is smaller than the sum of its proper divisors (13580505952).

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

12443512432 is a wasteful number, since it uses less digits than its factorization.

12443512432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138617 (or 138611 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

The spelling of 12443512432 in words is "twelve billion, four hundred forty-three million, five hundred twelve thousand, four hundred thirty-two".