166841851733 has 2 divisors, whose sum is σ = 166841851734. Its totient is φ = 166841851732.

The previous prime is 166841851721. The next prime is 166841851783. The reversal of 166841851733 is 337158148661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133720399684 + 33121452049 = 365678^2 + 181993^2 .

It is a cyclic number.

It is not a de Polignac number, because 166841851733 - 2¹⁰ = 166841850709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166841851783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83420925866 + 83420925867.

It is an arithmetic number, because the mean of its divisors is an integer number (83420925867).

Almost surely, 2^166841851733 is an apocalyptic number.

It is an amenable number.

166841851733 is a deficient number, since it is larger than the sum of its proper divisors (1).

166841851733 is an equidigital number, since it uses as much as digits as its factorization.

166841851733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The spelling of 166841851733 in words is "one hundred sixty-six billion, eight hundred forty-one million, eight hundred fifty-one thousand, seven hundred thirty-three".