20084349171697 has 2 divisors, whose sum is σ = 20084349171698. Its totient is φ = 20084349171696.

The previous prime is 20084349171661. The next prime is 20084349171713. The reversal of 20084349171697 is 79617194348002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13618395276721 + 6465953894976 = 3690311^2 + 2542824^2 .

It is a cyclic number.

It is not a de Polignac number, because 20084349171697 - 2⁷ = 20084349171569 is a prime.

It is not a weakly prime, because it can be changed into another prime (20084349171647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10042174585848 + 10042174585849.

It is an arithmetic number, because the mean of its divisors is an integer number (10042174585849).

Almost surely, 2^{20084349171697} is an apocalyptic number.

It is an amenable number.

20084349171697 is a deficient number, since it is larger than the sum of its proper divisors (1).

20084349171697 is an equidigital number, since it uses as much as digits as its factorization.

20084349171697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 20084349171697 in words is "twenty trillion, eighty-four billion, three hundred forty-nine million, one hundred seventy-one thousand, six hundred ninety-seven".