8066809885369 has 27 divisors (see below), whose sum is σ = 8280342374031. Its totient is φ = 7858755762480.

The previous prime is 8066809885361. The next prime is 8066809885439. The reversal of 8066809885369 is 9635889086608.

The square root of 8066809885369 is 2840213.

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., 5622527788969 + 2444282096400 = 2371187^2 + 1563420^2 .

It is not a de Polignac number, because 8066809885369 - 2³ = 8066809885361 is a prime.

It is a super-2 number, since 2×8066809885369² (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 = 8066809885295 and 8066809885304.

It is not an unprimeable number, because it can be changed into a prime (8066809885361) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 21980408224 + ... + 21980408590.

Almost surely, 2^{8066809885369} is an apocalyptic number.

8066809885369 is the 2840213-rd square number.

8066809885369 is the 1420107-th centered octagonal number.

It is an amenable number.

8066809885369 is a deficient number, since it is larger than the sum of its proper divisors (213532488662).

8066809885369 is an frugal number, since it uses more digits than its factorization.

8066809885369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 1074954240, while the sum is 76.

The spelling of 8066809885369 in words is "eight trillion, sixty-six billion, eight hundred nine million, eight hundred eighty-five thousand, three hundred sixty-nine".