8915318006173 has 4 divisors (see below), whose sum is σ = 9007228501180. Its totient is φ = 8823407511168.

The previous prime is 8915318006149. The next prime is 8915318006213. The reversal of 8915318006173 is 3716008135198.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5599342561849 + 3315975444324 = 2366293^2 + 1820982^2 .

It is a cyclic number.

It is not a de Polignac number, because 8915318006173 - 2²⁵ = 8915284451741 is a prime.

It is a super-2 number, since 2×8915318006173² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8915318006173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8915318006873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45955247358 + ... + 45955247551.

It is an arithmetic number, because the mean of its divisors is an integer number (2251807125295).

Almost surely, 2^{8915318006173} is an apocalyptic number.

It is an amenable number.

8915318006173 is a deficient number, since it is larger than the sum of its proper divisors (91910495007).

8915318006173 is an equidigital number, since it uses as much as digits as its factorization.

8915318006173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91910495006.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 8915318006173 in words is "eight trillion, nine hundred fifteen billion, three hundred eighteen million, six thousand, one hundred seventy-three".