166004384333773 has 2 divisors, whose sum is σ = 166004384333774. Its totient is φ = 166004384333772.

The previous prime is 166004384333731. The next prime is 166004384333779. The reversal of 166004384333773 is 377333483400661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155988184767529 + 10016199566244 = 12489523^2 + 3164838^2 .

It is a cyclic number.

It is not a de Polignac number, because 166004384333773 - 2⁹ = 166004384333261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166004384333779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83002192166886 + 83002192166887.

It is an arithmetic number, because the mean of its divisors is an integer number (83002192166887).

Almost surely, 2^{166004384333773} is an apocalyptic number.

It is an amenable number.

166004384333773 is a deficient number, since it is larger than the sum of its proper divisors (1).

166004384333773 is an equidigital number, since it uses as much as digits as its factorization.

166004384333773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54867456, while the sum is 58.

The spelling of 166004384333773 in words is "one hundred sixty-six trillion, four billion, three hundred eighty-four million, three hundred thirty-three thousand, seven hundred seventy-three".