166644082867 has 2 divisors, whose sum is σ = 166644082868. Its totient is φ = 166644082866.

The previous prime is 166644082837. The next prime is 166644082883. The reversal of 166644082867 is 768280446661.

166644082867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166644082867 - 2¹¹ = 166644080819 is a prime.

It is not a weakly prime, because it can be changed into another prime (166644082837) 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, 83322041433 + 83322041434.

It is an arithmetic number, because the mean of its divisors is an integer number (83322041434).

Almost surely, 2^166644082867 is an apocalyptic number.

166644082867 is a deficient number, since it is larger than the sum of its proper divisors (1).

166644082867 is an equidigital number, since it uses as much as digits as its factorization.

166644082867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18579456, while the sum is 58.

The spelling of 166644082867 in words is "one hundred sixty-six billion, six hundred forty-four million, eighty-two thousand, eight hundred sixty-seven".