8316799568989 has 4 divisors (see below), whose sum is σ = 8377506135324. Its totient is φ = 8256093002656.

The previous prime is 8316799568977. The next prime is 8316799569011. The reversal of 8316799568989 is 9898659976138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3995369340964 + 4321430228025 = 1998842^2 + 2078805^2 .

It is a cyclic number.

It is not a de Polignac number, because 8316799568989 - 2⁹ = 8316799568477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8316799568939) 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, 30353282962 + ... + 30353283235.

It is an arithmetic number, because the mean of its divisors is an integer number (2094376533831).

Almost surely, 2^{8316799568989} is an apocalyptic number.

It is an amenable number.

8316799568989 is a deficient number, since it is larger than the sum of its proper divisors (60706566335).

8316799568989 is a wasteful number, since it uses less digits than its factorization.

8316799568989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60706566334.

The product of its digits is 12697896960, while the sum is 88.

The spelling of 8316799568989 in words is "eight trillion, three hundred sixteen billion, seven hundred ninety-nine million, five hundred sixty-eight thousand, nine hundred eighty-nine".