20307655065 has 16 divisors (see below), whose sum is σ = 34403557248. Its totient is φ = 10193646336.

The previous prime is 20307655033. The next prime is 20307655117. The reversal of 20307655065 is 56055670302.

It is not a de Polignac number, because 20307655065 - 2⁵ = 20307655033 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 39818677 + ... + 39819186.

It is an arithmetic number, because the mean of its divisors is an integer number (2150222328).

Almost surely, 2^20307655065 is an apocalyptic number.

It is an amenable number.

20307655065 is a deficient number, since it is larger than the sum of its proper divisors (14095902183).

20307655065 is a wasteful number, since it uses less digits than its factorization.

20307655065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79637888.

The product of its (nonzero) digits is 189000, while the sum is 39.

The spelling of 20307655065 in words is "twenty billion, three hundred seven million, six hundred fifty-five thousand, sixty-five".