20017835317 has 2 divisors, whose sum is σ = 20017835318. Its totient is φ = 20017835316.

The previous prime is 20017835309. The next prime is 20017835381. The reversal of 20017835317 is 71353871002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18601140996 + 1416694321 = 136386^2 + 37639^2 .

It is a cyclic number.

It is not a de Polignac number, because 20017835317 - 2³ = 20017835309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20017835917) 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, 10008917658 + 10008917659.

It is an arithmetic number, because the mean of its divisors is an integer number (10008917659).

Almost surely, 2^20017835317 is an apocalyptic number.

It is an amenable number.

20017835317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20017835317 is an equidigital number, since it uses as much as digits as its factorization.

20017835317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 20017835317 in words is "twenty billion, seventeen million, eight hundred thirty-five thousand, three hundred seventeen".