6165165645 has 24 divisors (see below), whose sum is σ = 10688251392. Its totient is φ = 3287484000.

The previous prime is 6165165577. The next prime is 6165165659. The reversal of 6165165645 is 5465615616.

It is not a de Polignac number, because 6165165645 - 2⁸ = 6165165389 is a prime.

It is a super-3 number, since 3×6165165645³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6165165645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349180 + ... + 366410.

It is an arithmetic number, because the mean of its divisors is an integer number (445343808).

Almost surely, 2^6165165645 is an apocalyptic number.

It is an amenable number.

6165165645 is a deficient number, since it is larger than the sum of its proper divisors (4523085747).

6165165645 is a wasteful number, since it uses less digits than its factorization.

6165165645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25193 (or 25190 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 6165165645 is about 78518.5687910828. The cubic root of 6165165645 is about 1833.6435560067.

The spelling of 6165165645 in words is "six billion, one hundred sixty-five million, one hundred sixty-five thousand, six hundred forty-five".