12647247117 has 4 divisors (see below), whose sum is σ = 16862996160. Its totient is φ = 8431498076.

The previous prime is 12647247113. The next prime is 12647247143. The reversal of 12647247117 is 71174274621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12647247117 - 2² = 12647247113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12647247113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2107874517 + ... + 2107874522.

It is an arithmetic number, because the mean of its divisors is an integer number (4215749040).

Almost surely, 2^12647247117 is an apocalyptic number.

It is an amenable number.

12647247117 is a deficient number, since it is larger than the sum of its proper divisors (4215749043).

12647247117 is an equidigital number, since it uses as much as digits as its factorization.

12647247117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4215749042.

The product of its digits is 131712, while the sum is 42.

The spelling of 12647247117 in words is "twelve billion, six hundred forty-seven million, two hundred forty-seven thousand, one hundred seventeen".