166846144471 has 2 divisors, whose sum is σ = 166846144472. Its totient is φ = 166846144470.

The previous prime is 166846144469. The next prime is 166846144481. The reversal of 166846144471 is 174441648661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166846144471 - 2¹ = 166846144469 is a prime.

It is a super-3 number, since 3×166846144471³ (a number of 35 digits) contains 333 as substring.

Together with 166846144469, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166846144481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83423072235 + 83423072236.

It is an arithmetic number, because the mean of its divisors is an integer number (83423072236).

Almost surely, 2^166846144471 is an apocalyptic number.

166846144471 is a deficient number, since it is larger than the sum of its proper divisors (1).

166846144471 is an equidigital number, since it uses as much as digits as its factorization.

166846144471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3096576, while the sum is 52.

The spelling of 166846144471 in words is "one hundred sixty-six billion, eight hundred forty-six million, one hundred forty-four thousand, four hundred seventy-one".