165655142171333 has 2 divisors, whose sum is σ = 165655142171334. Its totient is φ = 165655142171332.

The previous prime is 165655142171317. The next prime is 165655142171339. The reversal of 165655142171333 is 333171241556561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118779525554404 + 46875616616929 = 10898602^2 + 6846577^2 .

It is a cyclic number.

It is not a de Polignac number, because 165655142171333 - 2⁴ = 165655142171317 is a prime.

It is a super-2 number, since 2×165655142171333² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165655142171339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82827571085666 + 82827571085667.

It is an arithmetic number, because the mean of its divisors is an integer number (82827571085667).

Almost surely, 2^{165655142171333} is an apocalyptic number.

It is an amenable number.

165655142171333 is a deficient number, since it is larger than the sum of its proper divisors (1).

165655142171333 is an equidigital number, since it uses as much as digits as its factorization.

165655142171333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804000, while the sum is 53.

The spelling of 165655142171333 in words is "one hundred sixty-five trillion, six hundred fifty-five billion, one hundred forty-two million, one hundred seventy-one thousand, three hundred thirty-three".