8816665288369 has 9 divisors (see below), whose sum is σ = 9061506676971. Its totient is φ = 8578270143000.

The previous prime is 8816665288337. The next prime is 8816665288393. The reversal of 8816665288369 is 9638825666188.

The square root of 8816665288369 is 2969287.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7889273176225 + 927392112144 = 2808785^2 + 963012^2 .

It is not a de Polignac number, because 8816665288369 - 2⁵ = 8816665288337 is a prime.

It is a super-2 number, since 2×8816665288369² (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 = 8816665288295 and 8816665288304.

It is not an unprimeable number, because it can be changed into a prime (8816665288309) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 109823494 + ... + 109903744.

It is an arithmetic number, because the mean of its divisors is an integer number (1006834075219).

Almost surely, 2^{8816665288369} is an apocalyptic number.

8816665288369 is the 2969287-th square number.

8816665288369 is the 1484644-th centered octagonal number.

It is an amenable number.

8816665288369 is a deficient number, since it is larger than the sum of its proper divisors (244841388602).

8816665288369 is an frugal number, since it uses more digits than its factorization.

8816665288369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160576 (or 80288 counting only the distinct ones).

The product of its digits is 1433272320, while the sum is 76.

The spelling of 8816665288369 in words is "eight trillion, eight hundred sixteen billion, six hundred sixty-five million, two hundred eighty-eight thousand, three hundred sixty-nine".