167210871181 has 2 divisors, whose sum is σ = 167210871182. Its totient is φ = 167210871180.

The previous prime is 167210871143. The next prime is 167210871187. The reversal of 167210871181 is 181178012761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111912997156 + 55297874025 = 334534^2 + 235155^2 .

It is a cyclic number.

It is not a de Polignac number, because 167210871181 - 2²⁵ = 167177316749 is a prime.

It is a super-2 number, since 2×167210871181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167210871187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83605435590 + 83605435591.

It is an arithmetic number, because the mean of its divisors is an integer number (83605435591).

Almost surely, 2^167210871181 is an apocalyptic number.

It is an amenable number.

167210871181 is a deficient number, since it is larger than the sum of its proper divisors (1).

167210871181 is an equidigital number, since it uses as much as digits as its factorization.

167210871181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 43.

The spelling of 167210871181 in words is "one hundred sixty-seven billion, two hundred ten million, eight hundred seventy-one thousand, one hundred eighty-one".