81717183107317 has 8 divisors (see below), whose sum is σ = 82012974624576. Its totient is φ = 81421441155552.

The previous prime is 81717183107309. The next prime is 81717183107377. The reversal of 81717183107317 is 71370138171718.

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

It is a cyclic number.

It is not a de Polignac number, because 81717183107317 - 2³ = 81717183107309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81717183107377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9086473 + ... + 15684334.

It is an arithmetic number, because the mean of its divisors is an integer number (10251621828072).

Almost surely, 2^{81717183107317} is an apocalyptic number.

It is an amenable number.

81717183107317 is a deficient number, since it is larger than the sum of its proper divisors (295791517259).

81717183107317 is a wasteful number, since it uses less digits than its factorization.

81717183107317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24782747.

The product of its (nonzero) digits is 1382976, while the sum is 55.

The spelling of 81717183107317 in words is "eighty-one trillion, seven hundred seventeen billion, one hundred eighty-three million, one hundred seven thousand, three hundred seventeen".