12432442505 has 32 divisors (see below), whose sum is σ = 17486316288. Its totient is φ = 8307532800.

The previous prime is 12432442489. The next prime is 12432442531. The reversal of 12432442505 is 50524423421.

It is not a de Polignac number, because 12432442505 - 2⁴ = 12432442489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1363010 + ... + 1372100.

It is an arithmetic number, because the mean of its divisors is an integer number (546447384).

Almost surely, 2^12432442505 is an apocalyptic number.

It is an amenable number.

12432442505 is a deficient number, since it is larger than the sum of its proper divisors (5053873783).

12432442505 is an equidigital number, since it uses as much as digits as its factorization.

12432442505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10097.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 12432442505 its reverse (50524423421), we get a palindrome (62956865926).

The spelling of 12432442505 in words is "twelve billion, four hundred thirty-two million, four hundred forty-two thousand, five hundred five".