171108816479 has 2 divisors, whose sum is σ = 171108816480. Its totient is φ = 171108816478.

The previous prime is 171108816433. The next prime is 171108816509. The reversal of 171108816479 is 974618801171.

It is a strong prime.

It is an emirp because it is prime and its reverse (974618801171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171108816479 - 2²⁴ = 171092039263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 171108816479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171108816379) 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, 85554408239 + 85554408240.

It is an arithmetic number, because the mean of its divisors is an integer number (85554408240).

Almost surely, 2^171108816479 is an apocalyptic number.

171108816479 is a deficient number, since it is larger than the sum of its proper divisors (1).

171108816479 is an equidigital number, since it uses as much as digits as its factorization.

171108816479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 53.

The spelling of 171108816479 in words is "one hundred seventy-one billion, one hundred eight million, eight hundred sixteen thousand, four hundred seventy-nine".