8516999317 has 2 divisors, whose sum is σ = 8516999318. Its totient is φ = 8516999316.

The previous prime is 8516999311. The next prime is 8516999321. The reversal of 8516999317 is 7139996158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6142483876 + 2374515441 = 78374^2 + 48729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8516999317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8516999311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4258499658 + 4258499659.

It is an arithmetic number, because the mean of its divisors is an integer number (4258499659).

Almost surely, 2^8516999317 is an apocalyptic number.

It is an amenable number.

8516999317 is a deficient number, since it is larger than the sum of its proper divisors (1).

8516999317 is an equidigital number, since it uses as much as digits as its factorization.

8516999317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 58.

The square root of 8516999317 is about 92287.5902654306. The cubic root of 8516999317 is about 2042.1871420419.

The spelling of 8516999317 in words is "eight billion, five hundred sixteen million, nine hundred ninety-nine thousand, three hundred seventeen".