9665443331 has 8 divisors (see below), whose sum is σ = 9767301120. Its totient is φ = 9563988168.

The previous prime is 9665443327. The next prime is 9665443339. The reversal of 9665443331 is 1333445669.

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

It is a cyclic number.

It is not a de Polignac number, because 9665443331 - 2² = 9665443327 is a prime.

It is a super-2 number, since 2×9665443331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9665443339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52271 + ... + 148536.

It is an arithmetic number, because the mean of its divisors is an integer number (1220912640).

Almost surely, 2^9665443331 is an apocalyptic number.

9665443331 is a deficient number, since it is larger than the sum of its proper divisors (101857789).

9665443331 is a wasteful number, since it uses less digits than its factorization.

9665443331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201313.

The product of its digits is 699840, while the sum is 44.

The square root of 9665443331 is about 98312.9865836655. The cubic root of 9665443331 is about 2130.1356442671.

The spelling of 9665443331 in words is "nine billion, six hundred sixty-five million, four hundred forty-three thousand, three hundred thirty-one".