8173815857165 has 32 divisors (see below), whose sum is σ = 11438965359360. Its totient is φ = 5491054080000.

The previous prime is 8173815857161. The next prime is 8173815857227. The reversal of 8173815857165 is 5617585183718.

It is not a de Polignac number, because 8173815857165 - 2² = 8173815857161 is a prime.

It is a super-2 number, since 2×8173815857165² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8173815857161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7090580 + ... + 8162349.

It is an arithmetic number, because the mean of its divisors is an integer number (357467667480).

Almost surely, 2^{8173815857165} is an apocalyptic number.

It is an amenable number.

8173815857165 is a deficient number, since it is larger than the sum of its proper divisors (3265149502195).

8173815857165 is a wasteful number, since it uses less digits than its factorization.

8173815857165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15253253.

The product of its digits is 56448000, while the sum is 65.

The spelling of 8173815857165 in words is "eight trillion, one hundred seventy-three billion, eight hundred fifteen million, eight hundred fifty-seven thousand, one hundred sixty-five".