20323646017 has 2 divisors, whose sum is σ = 20323646018. Its totient is φ = 20323646016.

The previous prime is 20323645987. The next prime is 20323646027. The reversal of 20323646017 is 71064632302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13100175936 + 7223470081 = 114456^2 + 84991^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323646017 - 2²⁷ = 20189428289 is a prime.

It is not a weakly prime, because it can be changed into another prime (20323646027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161823008 + 10161823009.

It is an arithmetic number, because the mean of its divisors is an integer number (10161823009).

Almost surely, 2^20323646017 is an apocalyptic number.

It is an amenable number.

20323646017 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323646017 is an equidigital number, since it uses as much as digits as its factorization.

20323646017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 20323646017 in words is "twenty billion, three hundred twenty-three million, six hundred forty-six thousand, seventeen".