6644165095 has 4 divisors (see below), whose sum is σ = 7972998120. Its totient is φ = 5315332072.

The previous prime is 6644165093. The next prime is 6644165137. The reversal of 6644165095 is 5905614466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6644165095 - 2¹ = 6644165093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644165093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664416505 + ... + 664416514.

It is an arithmetic number, because the mean of its divisors is an integer number (1993249530).

Almost surely, 2^6644165095 is an apocalyptic number.

6644165095 is a deficient number, since it is larger than the sum of its proper divisors (1328833025).

6644165095 is a wasteful number, since it uses less digits than its factorization.

6644165095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328833024.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 6644165095 is about 81511.7482023297. The cubic root of 6644165095 is about 1879.9521919901.

The spelling of 6644165095 in words is "six billion, six hundred forty-four million, one hundred sixty-five thousand, ninety-five".