171398626708163 has 2 divisors, whose sum is σ = 171398626708164. Its totient is φ = 171398626708162.

The previous prime is 171398626708091. The next prime is 171398626708181. The reversal of 171398626708163 is 361807626893171.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171398626708163 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 171398626708093 and 171398626708102.

It is not a weakly prime, because it can be changed into another prime (171398626708663) 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, 85699313354081 + 85699313354082.

It is an arithmetic number, because the mean of its divisors is an integer number (85699313354082).

Almost surely, 2^{171398626708163} is an apocalyptic number.

171398626708163 is a deficient number, since it is larger than the sum of its proper divisors (1).

171398626708163 is an equidigital number, since it uses as much as digits as its factorization.

171398626708163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 109734912, while the sum is 68.

The spelling of 171398626708163 in words is "one hundred seventy-one trillion, three hundred ninety-eight billion, six hundred twenty-six million, seven hundred eight thousand, one hundred sixty-three".