6565655216 has 40 divisors (see below), whose sum is σ = 13167073920. Its totient is φ = 3167829504.

The previous prime is 6565655209. The next prime is 6565655237. The reversal of 6565655216 is 6125565656.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211585 + ... + 1216991.

It is an arithmetic number, because the mean of its divisors is an integer number (329176848).

Almost surely, 2^6565655216 is an apocalyptic number.

It is an amenable number.

6565655216 is an abundant number, since it is smaller than the sum of its proper divisors (6601418704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6565655216 is a wasteful number, since it uses less digits than its factorization.

6565655216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8061 (or 8055 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 47.

The square root of 6565655216 is about 81028.7308058074. The cubic root of 6565655216 is about 1872.5180996502.

The spelling of 6565655216 in words is "six billion, five hundred sixty-five million, six hundred fifty-five thousand, two hundred sixteen".