166702070089 has 2 divisors, whose sum is σ = 166702070090. Its totient is φ = 166702070088.

The previous prime is 166702070071. The next prime is 166702070107. The reversal of 166702070089 is 980070207661.

It is a happy number.

166702070089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (166702070071) and next prime (166702070107).

It can be written as a sum of positive squares in only one way, i.e., 161254449225 + 5447620864 = 401565^2 + 73808^2 .

It is an emirp because it is prime and its reverse (980070207661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166702070089 - 2¹⁷ = 166701939017 is a prime.

It is not a weakly prime, because it can be changed into another prime (166702070189) 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 as a sum of consecutive naturals, namely, 83351035044 + 83351035045.

It is an arithmetic number, because the mean of its divisors is an integer number (83351035045).

Almost surely, 2^166702070089 is an apocalyptic number.

It is an amenable number.

166702070089 is a deficient number, since it is larger than the sum of its proper divisors (1).

166702070089 is an equidigital number, since it uses as much as digits as its factorization.

166702070089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 166702070089 in words is "one hundred sixty-six billion, seven hundred two million, seventy thousand, eighty-nine".