12917786171 has 8 divisors (see below), whose sum is σ = 13560148224. Its totient is φ = 12282150760.

The previous prime is 12917786143. The next prime is 12917786179. The reversal of 12917786171 is 17168771921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12917786171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12917786179) 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, 1677725 + ... + 1685406.

It is an arithmetic number, because the mean of its divisors is an integer number (1695018528).

Almost surely, 2^12917786171 is an apocalyptic number.

12917786171 is a deficient number, since it is larger than the sum of its proper divisors (642362053).

12917786171 is a wasteful number, since it uses less digits than its factorization.

12917786171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363321.

The product of its digits is 296352, while the sum is 50.

The spelling of 12917786171 in words is "twelve billion, nine hundred seventeen million, seven hundred eighty-six thousand, one hundred seventy-one".