166788633158333 has 2 divisors, whose sum is σ = 166788633158334. Its totient is φ = 166788633158332.

The previous prime is 166788633158321. The next prime is 166788633158347. The reversal of 166788633158333 is 333851336887661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155058953439289 + 11729679719044 = 12452267^2 + 3424862^2 .

It is a cyclic number.

It is not a de Polignac number, because 166788633158333 - 2¹² = 166788633154237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166788633158353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83394316579166 + 83394316579167.

It is an arithmetic number, because the mean of its divisors is an integer number (83394316579167).

Almost surely, 2^{166788633158333} is an apocalyptic number.

It is an amenable number.

166788633158333 is a deficient number, since it is larger than the sum of its proper divisors (1).

166788633158333 is an equidigital number, since it uses as much as digits as its factorization.

166788633158333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 940584960, while the sum is 71.

The spelling of 166788633158333 in words is "one hundred sixty-six trillion, seven hundred eighty-eight billion, six hundred thirty-three million, one hundred fifty-eight thousand, three hundred thirty-three".