8128959383689 has 9 divisors (see below), whose sum is σ = 8228318181069. Its totient is φ = 8030786321100.

The previous prime is 8128959383687. The next prime is 8128959383707. The reversal of 8128959383689 is 9863839598218.

The square root of 8128959383689 is 2851133.

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

It is not a de Polignac number, because 8128959383689 - 2¹ = 8128959383687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8128959383683) 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, 236626864 + ... + 236661214.

Almost surely, 2^{8128959383689} is an apocalyptic number.

8128959383689 is the 2851133-rd square number.

8128959383689 is the 1425567-th centered octagonal number.

It is an amenable number.

8128959383689 is a deficient number, since it is larger than the sum of its proper divisors (99358797380).

8128959383689 is an frugal number, since it uses more digits than its factorization.

8128959383689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68868 (or 34434 counting only the distinct ones).

The product of its digits is 1612431360, while the sum is 79.

The spelling of 8128959383689 in words is "eight trillion, one hundred twenty-eight billion, nine hundred fifty-nine million, three hundred eighty-three thousand, six hundred eighty-nine".