12444445432 has 64 divisors (see below), whose sum is σ = 24381000000. Its totient is φ = 5947468800.

The previous prime is 12444445373. The next prime is 12444445441. The reversal of 12444445432 is 23454444421.

It is a happy number.

It is a super-2 number, since 2×12444445432² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12444445391 and 12444445400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20705932 + ... + 20706532.

It is an arithmetic number, because the mean of its divisors is an integer number (380953125).

Almost surely, 2^12444445432 is an apocalyptic number.

It is an amenable number.

12444445432 is a deficient number, since it is larger than the sum of its proper divisors (11936554568).

12444445432 is a wasteful number, since it uses less digits than its factorization.

12444445432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384 (or 1380 counting only the distinct ones).

The product of its digits is 245760, while the sum is 37.

Adding to 12444445432 its reverse (23454444421), we get a palindrome (35898889853).

The spelling of 12444445432 in words is "twelve billion, four hundred forty-four million, four hundred forty-five thousand, four hundred thirty-two".