12724322907 has 4 divisors (see below), whose sum is σ = 16965763880. Its totient is φ = 8482881936.

The previous prime is 12724322881. The next prime is 12724322909. The reversal of 12724322907 is 70922342721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12724322907 - 2²⁰ = 12723274331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12724322909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2120720482 + ... + 2120720487.

It is an arithmetic number, because the mean of its divisors is an integer number (4241440970).

Almost surely, 2^12724322907 is an apocalyptic number.

12724322907 is a deficient number, since it is larger than the sum of its proper divisors (4241440973).

12724322907 is an equidigital number, since it uses as much as digits as its factorization.

12724322907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241440972.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 12724322907 in words is "twelve billion, seven hundred twenty-four million, three hundred twenty-two thousand, nine hundred seven".