86167521171 has 8 divisors (see below), whose sum is σ = 127655586960. Its totient is φ = 57445014096.

The previous prime is 86167521169. The next prime is 86167521197. The reversal of 86167521171 is 17112576168.

86167521171 is a `hidden beast` number, since 8 + 61 + 67 + 521 + 1 + 7 + 1 = 666.

It is not a de Polignac number, because 86167521171 - 2¹ = 86167521169 is a prime.

It is a super-2 number, since 2×86167521171² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86167521101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1595694810 + ... + 1595694863.

It is an arithmetic number, because the mean of its divisors is an integer number (15956948370).

Almost surely, 2^86167521171 is an apocalyptic number.

86167521171 is a deficient number, since it is larger than the sum of its proper divisors (41488065789).

86167521171 is a wasteful number, since it uses less digits than its factorization.

86167521171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191389682 (or 3191389676 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The spelling of 86167521171 in words is "eighty-six billion, one hundred sixty-seven million, five hundred twenty-one thousand, one hundred seventy-one".