6565500006650 has 48 divisors (see below), whose sum is σ = 13366795100568. Its totient is φ = 2384443872000.

The previous prime is 6565500006647. The next prime is 6565500006683. The reversal of 6565500006650 is 566000055656.

It can be written as a sum of positive squares in 12 ways, for example, as 7736785681 + 6557763220969 = 87959^2 + 2560813^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82753541 + ... + 82832840.

Almost surely, 2^{6565500006650} is an apocalyptic number.

6565500006650 is an abundant number, since it is smaller than the sum of its proper divisors (6801295093918).

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

6565500006650 is a wasteful number, since it uses less digits than its factorization.

6565500006650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165586467 (or 165586462 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 6565500006650 in words is "six trillion, five hundred sixty-five billion, five hundred million, six thousand, six hundred fifty".