12917786168 has 16 divisors (see below), whose sum is σ = 27680970480. Its totient is φ = 5536194048.

The previous prime is 12917786143. The next prime is 12917786179. The reversal of 12917786168 is 86168771921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 230674753 = 12917786168 / (1 + 2 + 9 + 1 + 7 + 7 + 8 + 6 + 1 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115337321 + ... + 115337432.

It is an arithmetic number, because the mean of its divisors is an integer number (1730060655).

Almost surely, 2^12917786168 is an apocalyptic number.

It is an amenable number.

12917786168 is an abundant number, since it is smaller than the sum of its proper divisors (14763184312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12917786168 is a wasteful number, since it uses less digits than its factorization.

12917786168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230674766 (or 230674762 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 56.

The spelling of 12917786168 in words is "twelve billion, nine hundred seventeen million, seven hundred eighty-six thousand, one hundred sixty-eight".