20200565065 has 16 divisors (see below), whose sum is σ = 25750612800. Its totient is φ = 15169436352.

The previous prime is 20200565059. The next prime is 20200565083. The reversal of 20200565065 is 56056500202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20200565065 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 965047 + ... + 985756.

It is an arithmetic number, because the mean of its divisors is an integer number (1609413300).

Almost surely, 2^20200565065 is an apocalyptic number.

It is an amenable number.

20200565065 is a deficient number, since it is larger than the sum of its proper divisors (5550047735).

20200565065 is a wasteful number, since it uses less digits than its factorization.

20200565065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950936.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 20200565065 in words is "twenty billion, two hundred million, five hundred sixty-five thousand, sixty-five".