167205161009 has 2 divisors, whose sum is σ = 167205161010. Its totient is φ = 167205161008.

The previous prime is 167205160987. The next prime is 167205161077. The reversal of 167205161009 is 900161502761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126627087409 + 40578073600 = 355847^2 + 201440^2 .

It is a cyclic number.

It is not a de Polignac number, because 167205161009 - 2²⁴ = 167188383793 is a prime.

It is a super-2 number, since 2×167205161009² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (167205161089) 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 as a sum of consecutive naturals, namely, 83602580504 + 83602580505.

It is an arithmetic number, because the mean of its divisors is an integer number (83602580505).

Almost surely, 2^167205161009 is an apocalyptic number.

It is an amenable number.

167205161009 is a deficient number, since it is larger than the sum of its proper divisors (1).

167205161009 is an equidigital number, since it uses as much as digits as its factorization.

167205161009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The spelling of 167205161009 in words is "one hundred sixty-seven billion, two hundred five million, one hundred sixty-one thousand, nine".