20565034207 has 2 divisors, whose sum is σ = 20565034208. Its totient is φ = 20565034206.

The previous prime is 20565034163. The next prime is 20565034211. The reversal of 20565034207 is 70243056502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20565034207 - 2¹⁹ = 20564509919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20565034307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10282517103 + 10282517104.

It is an arithmetic number, because the mean of its divisors is an integer number (10282517104).

Almost surely, 2^20565034207 is an apocalyptic number.

20565034207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20565034207 is an equidigital number, since it uses as much as digits as its factorization.

20565034207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 34.

The spelling of 20565034207 in words is "twenty billion, five hundred sixty-five million, thirty-four thousand, two hundred seven".