171171080771 has 4 divisors (see below), whose sum is σ = 171172681392. Its totient is φ = 171169480152.

The previous prime is 171171080767. The next prime is 171171080797. The reversal of 171171080771 is 177080171171.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 171171080771 - 2² = 171171080767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171171080741) 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, 627455 + ... + 857928.

It is an arithmetic number, because the mean of its divisors is an integer number (42793170348).

Almost surely, 2^171171080771 is an apocalyptic number.

171171080771 is a deficient number, since it is larger than the sum of its proper divisors (1600621).

171171080771 is a wasteful number, since it uses less digits than its factorization.

171171080771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600620.

The product of its (nonzero) digits is 19208, while the sum is 41.

The spelling of 171171080771 in words is "one hundred seventy-one billion, one hundred seventy-one million, eighty thousand, seven hundred seventy-one".