8172947850717 has 8 divisors (see below), whose sum is σ = 11735514862624. Its totient is φ = 5029506369648.

The previous prime is 8172947850707. The next prime is 8172947850719. The reversal of 8172947850717 is 7170587492718.

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

It is not a de Polignac number, because 8172947850717 - 2³⁴ = 8155767981533 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 (8172947850719) 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, 104781382663 + ... + 104781382740.

It is an arithmetic number, because the mean of its divisors is an integer number (1466939357828).

Almost surely, 2^{8172947850717} is an apocalyptic number.

It is an amenable number.

8172947850717 is a deficient number, since it is larger than the sum of its proper divisors (3562567011907).

8172947850717 is a wasteful number, since it uses less digits than its factorization.

8172947850717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209562765419.

The product of its (nonzero) digits is 55319040, while the sum is 66.

The spelling of 8172947850717 in words is "eight trillion, one hundred seventy-two billion, nine hundred forty-seven million, eight hundred fifty thousand, seven hundred seventeen".