166683335201 has 2 divisors, whose sum is σ = 166683335202. Its totient is φ = 166683335200.

The previous prime is 166683335141. The next prime is 166683335233. The reversal of 166683335201 is 102533386661.

It is a happy number.

166683335201 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., 154228998400 + 12454336801 = 392720^2 + 111599^2 .

It is an emirp because it is prime and its reverse (102533386661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166683335201 - 2¹⁴ = 166683318817 is a prime.

It is not a weakly prime, because it can be changed into another prime (166683331201) 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, 83341667600 + 83341667601.

It is an arithmetic number, because the mean of its divisors is an integer number (83341667601).

Almost surely, 2^166683335201 is an apocalyptic number.

It is an amenable number.

166683335201 is a deficient number, since it is larger than the sum of its proper divisors (1).

166683335201 is an equidigital number, since it uses as much as digits as its factorization.

166683335201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 166683335201 in words is "one hundred sixty-six billion, six hundred eighty-three million, three hundred thirty-five thousand, two hundred one".