6565543612 has 12 divisors (see below), whose sum is σ = 11573568720. Its totient is φ = 3258809696.

The previous prime is 6565543609. The next prime is 6565543627. The reversal of 6565543612 is 2163455656.

It is a super-3 number, since 3×6565543612³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5989912 + ... + 5991007.

It is an arithmetic number, because the mean of its divisors is an integer number (964464060).

Almost surely, 2^6565543612 is an apocalyptic number.

It is an amenable number.

6565543612 is a deficient number, since it is larger than the sum of its proper divisors (5008025108).

6565543612 is a wasteful number, since it uses less digits than its factorization.

6565543612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11981060 (or 11981058 counting only the distinct ones).

The product of its digits is 648000, while the sum is 43.

The square root of 6565543612 is about 81028.0421335725. The cubic root of 6565543612 is about 1872.5074898081.

The spelling of 6565543612 in words is "six billion, five hundred sixty-five million, five hundred forty-three thousand, six hundred twelve".