9988307565 has 32 divisors (see below), whose sum is σ = 16187060736. Its totient is φ = 5258614080.

The previous prime is 9988307491. The next prime is 9988307611. The reversal of 9988307565 is 5657038899.

It is not a de Polignac number, because 9988307565 - 2⁷ = 9988307437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9988307499 and 9988307508.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2023150 + ... + 2028080.

It is an arithmetic number, because the mean of its divisors is an integer number (505845648).

Almost surely, 2^9988307565 is an apocalyptic number.

It is an amenable number.

9988307565 is a deficient number, since it is larger than the sum of its proper divisors (6198753171).

9988307565 is a wasteful number, since it uses less digits than its factorization.

9988307565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6649.

The product of its (nonzero) digits is 16329600, while the sum is 60.

The square root of 9988307565 is about 99941.5207258725. The cubic root of 9988307565 is about 2153.5946763007.

The spelling of 9988307565 in words is "nine billion, nine hundred eighty-eight million, three hundred seven thousand, five hundred sixty-five".