12643170117 has 4 divisors (see below), whose sum is σ = 16857560160. Its totient is φ = 8428780076.

The previous prime is 12643170091. The next prime is 12643170131. The reversal of 12643170117 is 71107134621.

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 12643170117 - 2¹² = 12643166021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643170157) 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, 2107195017 + ... + 2107195022.

It is an arithmetic number, because the mean of its divisors is an integer number (4214390040).

Almost surely, 2^12643170117 is an apocalyptic number.

It is an amenable number.

12643170117 is a deficient number, since it is larger than the sum of its proper divisors (4214390043).

12643170117 is an equidigital number, since it uses as much as digits as its factorization.

12643170117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214390042.

The product of its (nonzero) digits is 7056, while the sum is 33.

The spelling of 12643170117 in words is "twelve billion, six hundred forty-three million, one hundred seventy thousand, one hundred seventeen".