16847479685 has 8 divisors (see below), whose sum is σ = 20252017176. Its totient is φ = 13454622720.

The previous prime is 16847479661. The next prime is 16847479703. The reversal of 16847479685 is 58697474861.

It can be written as a sum of positive squares in 4 ways, for example, as 1988357281 + 14859122404 = 44591^2 + 121898^2 .

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

It is not a de Polignac number, because 16847479685 - 2²⁰ = 16846431109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2916956 + ... + 2922725.

It is an arithmetic number, because the mean of its divisors is an integer number (2531502147).

Almost surely, 2^16847479685 is an apocalyptic number.

It is an amenable number.

16847479685 is a deficient number, since it is larger than the sum of its proper divisors (3404537491).

16847479685 is an equidigital number, since it uses as much as digits as its factorization.

16847479685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840263.

The product of its digits is 81285120, while the sum is 65.

The spelling of 16847479685 in words is "sixteen billion, eight hundred forty-seven million, four hundred seventy-nine thousand, six hundred eighty-five".