168273505333 has 4 divisors (see below), whose sum is σ = 168772833580. Its totient is φ = 167774177088.

The previous prime is 168273505331. The next prime is 168273505357. The reversal of 168273505333 is 333505372861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 333505372861 = 41443 ⋅8047327.

It can be written as a sum of positive squares in 2 ways, for example, as 42577020964 + 125696484369 = 206342^2 + 354537^2 .

It is a cyclic number.

It is not a de Polignac number, because 168273505333 - 2¹ = 168273505331 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168273505331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249663618 + ... + 249664291.

It is an arithmetic number, because the mean of its divisors is an integer number (42193208395).

Almost surely, 2^168273505333 is an apocalyptic number.

It is an amenable number.

168273505333 is a deficient number, since it is larger than the sum of its proper divisors (499328247).

168273505333 is an equidigital number, since it uses as much as digits as its factorization.

168273505333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499328246.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 168273505333 in words is "one hundred sixty-eight billion, two hundred seventy-three million, five hundred five thousand, three hundred thirty-three".