6565055128 has 16 divisors (see below), whose sum is σ = 12571382880. Its totient is φ = 3212686368.

The previous prime is 6565055113. The next prime is 6565055131. The reversal of 6565055128 is 8215505656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8729751 + ... + 8730502.

It is an arithmetic number, because the mean of its divisors is an integer number (785711430).

Almost surely, 2^6565055128 is an apocalyptic number.

It is an amenable number.

6565055128 is a deficient number, since it is larger than the sum of its proper divisors (6006327752).

6565055128 is a wasteful number, since it uses less digits than its factorization.

6565055128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17460306 (or 17460302 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 43.

The square root of 6565055128 is about 81025.0277877151. The cubic root of 6565055128 is about 1872.4610497524.

The spelling of 6565055128 in words is "six billion, five hundred sixty-five million, fifty-five thousand, one hundred twenty-eight".