16065202665 has 8 divisors (see below), whose sum is σ = 25704324288. Its totient is φ = 8568108080.

The previous prime is 16065202649. The next prime is 16065202669. The reversal of 16065202665 is 56620256061.

It is a happy number.

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

It is not a de Polignac number, because 16065202665 - 2⁴ = 16065202649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16065202669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535506741 + ... + 535506770.

It is an arithmetic number, because the mean of its divisors is an integer number (3213040536).

Almost surely, 2^16065202665 is an apocalyptic number.

16065202665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16065202665 is a deficient number, since it is larger than the sum of its proper divisors (9639121623).

16065202665 is a wasteful number, since it uses less digits than its factorization.

16065202665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071013519.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 16065202665 in words is "sixteen billion, sixty-five million, two hundred two thousand, six hundred sixty-five".