168543071 has 2 divisors, whose sum is σ = 168543072. Its totient is φ = 168543070.

The previous prime is 168543059. The next prime is 168543073. The reversal of 168543071 is 170345861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168543071 is a prime.

It is a super-2 number, since 2×168543071² = 56813533564222082, which contains 22 as substring.

Together with 168543073, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_9426068 and since 168543071 and 9426068 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168543073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84271535 + 84271536.

It is an arithmetic number, because the mean of its divisors is an integer number (84271536).

Almost surely, 2^168543071 is an apocalyptic number.

168543071 is a deficient number, since it is larger than the sum of its proper divisors (1).

168543071 is an equidigital number, since it uses as much as digits as its factorization.

168543071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 168543071 is about 12982.4139126743. The cubic root of 168543071 is about 552.3787559756.

The spelling of 168543071 in words is "one hundred sixty-eight million, five hundred forty-three thousand, seventy-one".