12391480456 has 32 divisors (see below), whose sum is σ = 23996966400. Its totient is φ = 5992513920.

The previous prime is 12391480379. The next prime is 12391480459. The reversal of 12391480456 is 65408419321.

12391480456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12391480459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461365 + ... + 487483.

It is an arithmetic number, because the mean of its divisors is an integer number (749905200).

Almost surely, 2^12391480456 is an apocalyptic number.

It is an amenable number.

12391480456 is a deficient number, since it is larger than the sum of its proper divisors (11605485944).

12391480456 is a wasteful number, since it uses less digits than its factorization.

12391480456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28069 (or 28065 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

Adding to 12391480456 its reverse (65408419321), we get a palindrome (77799899777).

The spelling of 12391480456 in words is "twelve billion, three hundred ninety-one million, four hundred eighty thousand, four hundred fifty-six".