8666961824273 has 2 divisors, whose sum is σ = 8666961824274. Its totient is φ = 8666961824272.

The previous prime is 8666961824263. The next prime is 8666961824293. The reversal of 8666961824273 is 3724281696668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7962685043329 + 704276780944 = 2821823^2 + 839212^2 .

It is a cyclic number.

It is not a de Polignac number, because 8666961824273 - 2¹² = 8666961820177 is a prime.

It is not a weakly prime, because it can be changed into another prime (8666961824263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4333480912136 + 4333480912137.

It is an arithmetic number, because the mean of its divisors is an integer number (4333480912137).

Almost surely, 2^{8666961824273} is an apocalyptic number.

It is an amenable number.

8666961824273 is a deficient number, since it is larger than the sum of its proper divisors (1).

8666961824273 is an equidigital number, since it uses as much as digits as its factorization.

8666961824273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250822656, while the sum is 68.

The spelling of 8666961824273 in words is "eight trillion, six hundred sixty-six billion, nine hundred sixty-one million, eight hundred twenty-four thousand, two hundred seventy-three".