8686728276868 has 12 divisors (see below), whose sum is σ = 15450983902732. Its totient is φ = 4272161447520.

The previous prime is 8686728276851. The next prime is 8686728276869.

8686728276868 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 3546133401924 + 5140594874944 = 1883118^2 + 2267288^2 .

It is a super-2 number, since 2×8686728276868² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8686728276791 and 8686728276800.

It is not an unprimeable number, because it can be changed into a prime (8686728276869) 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, 17800672455 + ... + 17800672942.

Almost surely, 2^{8686728276868} is an apocalyptic number.

It is an amenable number.

8686728276868 is a deficient number, since it is larger than the sum of its proper divisors (6764255625864).

8686728276868 is a wasteful number, since it uses less digits than its factorization.

8686728276868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35601345462 (or 35601345460 counting only the distinct ones).

The product of its digits is 8323596288, while the sum is 82.

The spelling of 8686728276868 in words is "eight trillion, six hundred eighty-six billion, seven hundred twenty-eight million, two hundred seventy-six thousand, eight hundred sixty-eight".