166023934361 has 2 divisors, whose sum is σ = 166023934362. Its totient is φ = 166023934360.

The previous prime is 166023934319. The next prime is 166023934369. The reversal of 166023934361 is 163439320661.

166023934361 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 can be written as a sum of positive squares in only one way, i.e., 162464618761 + 3559315600 = 403069^2 + 59660^2 .

It is a cyclic number.

It is not a de Polignac number, because 166023934361 - 2¹⁴ = 166023917977 is a prime.

It is not a weakly prime, because it can be changed into another prime (166023934369) 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, 83011967180 + 83011967181.

It is an arithmetic number, because the mean of its divisors is an integer number (83011967181).

Almost surely, 2^166023934361 is an apocalyptic number.

It is an amenable number.

166023934361 is a deficient number, since it is larger than the sum of its proper divisors (1).

166023934361 is an equidigital number, since it uses as much as digits as its factorization.

166023934361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 44.

The spelling of 166023934361 in words is "one hundred sixty-six billion, twenty-three million, nine hundred thirty-four thousand, three hundred sixty-one".