12447388432 has 20 divisors (see below), whose sum is σ = 24222135820. Its totient is φ = 6196514688.

The previous prime is 12447388409. The next prime is 12447388451. The reversal of 12447388432 is 23488374421.

It can be written as a sum of positive squares in 2 ways, for example, as 7191718416 + 5255670016 = 84804^2 + 72496^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694943 + ... + 1702270.

It is an arithmetic number, because the mean of its divisors is an integer number (1211106791).

Almost surely, 2^12447388432 is an apocalyptic number.

It is an amenable number.

12447388432 is a deficient number, since it is larger than the sum of its proper divisors (11774747388).

12447388432 is a wasteful number, since it uses less digits than its factorization.

12447388432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397450 (or 3397444 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 46.

The spelling of 12447388432 in words is "twelve billion, four hundred forty-seven million, three hundred eighty-eight thousand, four hundred thirty-two".