202011171697 has 2 divisors, whose sum is σ = 202011171698. Its totient is φ = 202011171696.

The previous prime is 202011171647. The next prime is 202011171743. The reversal of 202011171697 is 796171110202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193332572416 + 8678599281 = 439696^2 + 93159^2 .

It is a cyclic number.

It is not a de Polignac number, because 202011171697 - 2⁷ = 202011171569 is a prime.

It is not a weakly prime, because it can be changed into another prime (202011171647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101005585848 + 101005585849.

It is an arithmetic number, because the mean of its divisors is an integer number (101005585849).

Almost surely, 2^202011171697 is an apocalyptic number.

It is an amenable number.

202011171697 is a deficient number, since it is larger than the sum of its proper divisors (1).

202011171697 is an equidigital number, since it uses as much as digits as its factorization.

202011171697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 37.

Adding to 202011171697 its reverse (796171110202), we get a palindrome (998182281899).

The spelling of 202011171697 in words is "two hundred two billion, eleven million, one hundred seventy-one thousand, six hundred ninety-seven".