71706107171 has 4 divisors (see below), whose sum is σ = 71936673744. Its totient is φ = 71475540600.

The previous prime is 71706107149. The next prime is 71706107261. The reversal of 71706107171 is 17170160717.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17170160717 = 157 ⋅109364081.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71706107171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71706107111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115282820 + ... + 115283441.

It is an arithmetic number, because the mean of its divisors is an integer number (17984168436).

Almost surely, 2^71706107171 is an apocalyptic number.

71706107171 is a deficient number, since it is larger than the sum of its proper divisors (230566573).

71706107171 is a wasteful number, since it uses less digits than its factorization.

71706107171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230566572.

The product of its (nonzero) digits is 14406, while the sum is 38.

Adding to 71706107171 its reverse (17170160717), we get a palindrome (88876267888).

The spelling of 71706107171 in words is "seventy-one billion, seven hundred six million, one hundred seven thousand, one hundred seventy-one".