8686728276851 has 2 divisors, whose sum is σ = 8686728276852. Its totient is φ = 8686728276850.

The previous prime is 8686728276799. The next prime is 8686728276869. The reversal of 8686728276851 is 1586728276868.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8686728276851 - 2¹⁸ = 8686728014707 is a prime.

It is not a weakly prime, because it can be changed into another prime (8686728276151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4343364138425 + 4343364138426.

It is an arithmetic number, because the mean of its divisors is an integer number (4343364138426).

Almost surely, 2^{8686728276851} is an apocalyptic number.

8686728276851 is a deficient number, since it is larger than the sum of its proper divisors (1).

8686728276851 is an equidigital number, since it uses as much as digits as its factorization.

8686728276851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 867041280, while the sum is 74.

The spelling of 8686728276851 in words is "eight trillion, six hundred eighty-six billion, seven hundred twenty-eight million, two hundred seventy-six thousand, eight hundred fifty-one".