8171022881 has 24 divisors (see below), whose sum is σ = 9823338504. Its totient is φ = 6772254720.

The previous prime is 8171022869. The next prime is 8171022887. The reversal of 8171022881 is 1882201718.

It can be written as a sum of positive squares in 4 ways, for example, as 490000 + 8170532881 = 700^2 + 90391^2 .

It is not a de Polignac number, because 8171022881 - 2²⁶ = 8103914017 is a prime.

It is a super-2 number, since 2×8171022881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8171022887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209021 + ... + 245013.

It is an arithmetic number, because the mean of its divisors is an integer number (409305771).

Almost surely, 2^8171022881 is an apocalyptic number.

It is an amenable number.

8171022881 is a deficient number, since it is larger than the sum of its proper divisors (1652315623).

8171022881 is a wasteful number, since it uses less digits than its factorization.

8171022881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36161 (or 36154 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 38.

The square root of 8171022881 is about 90393.7104062003. The cubic root of 8171022881 is about 2014.1515375695.

The spelling of 8171022881 in words is "eight billion, one hundred seventy-one million, twenty-two thousand, eight hundred eighty-one".