6165055665 has 64 divisors (see below), whose sum is σ = 11197025280. Its totient is φ = 3217294080.

The previous prime is 6165055649. The next prime is 6165055697. The reversal of 6165055665 is 5665505616.

It is not a de Polignac number, because 6165055665 - 2⁴ = 6165055649 is a prime.

It is a super-2 number, since 2×6165055665² = 76015822705097184450, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6165055665.

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 63 ways as a sum of consecutive naturals, for example, 3311835 + ... + 3313695.

It is an arithmetic number, because the mean of its divisors is an integer number (174953520).

Almost surely, 2^6165055665 is an apocalyptic number.

It is an amenable number.

6165055665 is a deficient number, since it is larger than the sum of its proper divisors (5031969615).

6165055665 is a wasteful number, since it uses less digits than its factorization.

6165055665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391 (or 2385 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The square root of 6165055665 is about 78517.8684440682. The cubic root of 6165055665 is about 1833.6326525248.

It can be divided in two parts, 616505 and 5665, that added together give a triangular number (622170 = T₁₁₁₅).

The spelling of 6165055665 in words is "six billion, one hundred sixty-five million, fifty-five thousand, six hundred sixty-five".