12320144432 has 20 divisors (see below), whose sum is σ = 24089276640. Its totient is φ = 6103556928.

The previous prime is 12320144423. The next prime is 12320144437. The reversal of 12320144432 is 23444102321.

It is not an unprimeable number, because it can be changed into a prime (12320144437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3530408 + ... + 3533895.

It is an arithmetic number, because the mean of its divisors is an integer number (1204463832).

Almost surely, 2^12320144432 is an apocalyptic number.

It is an amenable number.

12320144432 is a deficient number, since it is larger than the sum of its proper divisors (11769132208).

12320144432 is a wasteful number, since it uses less digits than its factorization.

12320144432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7064420 (or 7064414 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 12320144432 its reverse (23444102321), we get a palindrome (35764246753).

The spelling of 12320144432 in words is "twelve billion, three hundred twenty million, one hundred forty-four thousand, four hundred thirty-two".