20934474533417 has 2 divisors, whose sum is σ = 20934474533418. Its totient is φ = 20934474533416.

The previous prime is 20934474533393. The next prime is 20934474533473. The reversal of 20934474533417 is 71433547443902.

It is an a-pointer prime, because the next prime (20934474533473) can be obtained adding 20934474533417 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12400708703296 + 8533765830121 = 3521464^2 + 2921261^2 .

It is a cyclic number.

It is not a de Polignac number, because 20934474533417 - 2¹² = 20934474529321 is a prime.

It is not a weakly prime, because it can be changed into another prime (20934474532417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10467237266708 + 10467237266709.

It is an arithmetic number, because the mean of its divisors is an integer number (10467237266709).

Almost surely, 2^{20934474533417} is an apocalyptic number.

It is an amenable number.

20934474533417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20934474533417 is an equidigital number, since it uses as much as digits as its factorization.

20934474533417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30481920, while the sum is 56.

The spelling of 20934474533417 in words is "twenty trillion, nine hundred thirty-four billion, four hundred seventy-four million, five hundred thirty-three thousand, four hundred seventeen".