12321585447 has 16 divisors (see below), whose sum is σ = 16680948480. Its totient is φ = 8088595200.

The previous prime is 12321585413. The next prime is 12321585517. The reversal of 12321585447 is 74458512321.

It is not a de Polignac number, because 12321585447 - 2⁸ = 12321585191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12321585399 and 12321585408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321585347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137079 + ... + 208407.

It is an arithmetic number, because the mean of its divisors is an integer number (1042559280).

Almost surely, 2^12321585447 is an apocalyptic number.

12321585447 is a deficient number, since it is larger than the sum of its proper divisors (4359363033).

12321585447 is an equidigital number, since it uses as much as digits as its factorization.

12321585447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72214.

The product of its digits is 268800, while the sum is 42.

The spelling of 12321585447 in words is "twelve billion, three hundred twenty-one million, five hundred eighty-five thousand, four hundred forty-seven".