16332568665 has 32 divisors (see below), whose sum is σ = 29872198656. Its totient is φ = 7464584640.

The previous prime is 16332568657. The next prime is 16332568691. The reversal of 16332568665 is 56686523361.

It is not a de Polignac number, because 16332568665 - 2³ = 16332568657 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, 509770 + ... + 540860.

It is an arithmetic number, because the mean of its divisors is an integer number (933506208).

Almost surely, 2^16332568665 is an apocalyptic number.

16332568665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16332568665 is a deficient number, since it is larger than the sum of its proper divisors (13539629991).

16332568665 is a wasteful number, since it uses less digits than its factorization.

16332568665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36109.

The product of its digits is 4665600, while the sum is 51.

The spelling of 16332568665 in words is "sixteen billion, three hundred thirty-two million, five hundred sixty-eight thousand, six hundred sixty-five".