12447561322 has 16 divisors (see below), whose sum is σ = 21376060992. Its totient is φ = 5325323040.

The previous prime is 12447561311. The next prime is 12447561323. The reversal of 12447561322 is 22316574421.

It is not an unprimeable number, because it can be changed into a prime (12447561323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770563 + ... + 786550.

It is an arithmetic number, because the mean of its divisors is an integer number (1336003812).

Almost surely, 2^12447561322 is an apocalyptic number.

12447561322 is a deficient number, since it is larger than the sum of its proper divisors (8928499670).

12447561322 is a wasteful number, since it uses less digits than its factorization.

12447561322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557693.

The product of its digits is 80640, while the sum is 37.

The spelling of 12447561322 in words is "twelve billion, four hundred forty-seven million, five hundred sixty-one thousand, three hundred twenty-two".