9842788617665 has 32 divisors (see below), whose sum is σ = 12875537606400. Its totient is φ = 7193950156800.

The previous prime is 9842788617601. The next prime is 9842788617679. The reversal of 9842788617665 is 5667168872489.

It is not a de Polignac number, because 9842788617665 - 2⁶ = 9842788617601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6402791 + ... + 7789820.

It is an arithmetic number, because the mean of its divisors is an integer number (402360550200).

Almost surely, 2^{9842788617665} is an apocalyptic number.

It is an amenable number.

9842788617665 is a deficient number, since it is larger than the sum of its proper divisors (3032748988735).

9842788617665 is a wasteful number, since it uses less digits than its factorization.

9842788617665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14192873.

The product of its digits is 1950842880, while the sum is 77.

The spelling of 9842788617665 in words is "nine trillion, eight hundred forty-two billion, seven hundred eighty-eight million, six hundred seventeen thousand, six hundred sixty-five".