9117079820965 has 4 divisors (see below), whose sum is σ = 10940495785164. Its totient is φ = 7293663856768.

The previous prime is 9117079820963. The next prime is 9117079821053. The reversal of 9117079820965 is 5690289707119.

9117079820965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2284674572196 + 6832405248769 = 1511514^2 + 2613887^2 .

It is a cyclic number.

It is not a de Polignac number, because 9117079820965 - 2¹ = 9117079820963 is a prime.

It is a super-2 number, since 2×9117079820965² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9117079820897 and 9117079820906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9117079820963) 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, 911707982092 + ... + 911707982101.

It is an arithmetic number, because the mean of its divisors is an integer number (2735123946291).

Almost surely, 2^{9117079820965} is an apocalyptic number.

It is an amenable number.

9117079820965 is a deficient number, since it is larger than the sum of its proper divisors (1823415964199).

9117079820965 is a wasteful number, since it uses less digits than its factorization.

9117079820965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823415964198.

The product of its (nonzero) digits is 17146080, while the sum is 64.

The spelling of 9117079820965 in words is "nine trillion, one hundred seventeen billion, seventy-nine million, eight hundred twenty thousand, nine hundred sixty-five".