20044040017 has 2 divisors, whose sum is σ = 20044040018. Its totient is φ = 20044040016.

The previous prime is 20044039993. The next prime is 20044040021. The reversal of 20044040017 is 71004044002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20038950481 + 5089536 = 141559^2 + 2256^2 .

It is a cyclic number.

It is not a de Polignac number, because 20044040017 - 2⁷ = 20044039889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20044040017.

It is not a weakly prime, because it can be changed into another prime (20044040057) by changing a digit.

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 as a sum of consecutive naturals, namely, 10022020008 + 10022020009.

It is an arithmetic number, because the mean of its divisors is an integer number (10022020009).

Almost surely, 2^20044040017 is an apocalyptic number.

It is an amenable number.

20044040017 is a deficient number, since it is larger than the sum of its proper divisors (1).

20044040017 is an equidigital number, since it uses as much as digits as its factorization.

20044040017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 22.

Adding to 20044040017 its reverse (71004044002), we get a palindrome (91048084019).

The spelling of 20044040017 in words is "twenty billion, forty-four million, forty thousand, seventeen".