168443609933 has 2 divisors, whose sum is σ = 168443609934. Its totient is φ = 168443609932.

The previous prime is 168443609927. The next prime is 168443609941. The reversal of 168443609933 is 339906344861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150914379529 + 17529230404 = 388477^2 + 132398^2 .

It is a cyclic number.

It is not a de Polignac number, because 168443609933 - 2¹⁶ = 168443544397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168443609923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84221804966 + 84221804967.

It is an arithmetic number, because the mean of its divisors is an integer number (84221804967).

Almost surely, 2^168443609933 is an apocalyptic number.

It is an amenable number.

168443609933 is a deficient number, since it is larger than the sum of its proper divisors (1).

168443609933 is an equidigital number, since it uses as much as digits as its factorization.

168443609933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10077696, while the sum is 56.

The spelling of 168443609933 in words is "one hundred sixty-eight billion, four hundred forty-three million, six hundred nine thousand, nine hundred thirty-three".