8516841685 has 8 divisors (see below), whose sum is σ = 11149320096. Its totient is φ = 6194066640.

The previous prime is 8516841661. The next prime is 8516841689. The reversal of 8516841685 is 5861486158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8516841685 - 2²¹ = 8514744533 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 (8516841689) 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 in 7 ways as a sum of consecutive naturals, for example, 77425779 + ... + 77425888.

It is an arithmetic number, because the mean of its divisors is an integer number (1393665012).

Almost surely, 2^8516841685 is an apocalyptic number.

It is an amenable number.

8516841685 is a deficient number, since it is larger than the sum of its proper divisors (2632478411).

8516841685 is a wasteful number, since it uses less digits than its factorization.

8516841685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154851683.

The product of its digits is 1843200, while the sum is 52.

The square root of 8516841685 is about 92286.7362354959. The cubic root of 8516841685 is about 2042.1745430808.

The spelling of 8516841685 in words is "eight billion, five hundred sixteen million, eight hundred forty-one thousand, six hundred eighty-five".