166116343 has 2 divisors, whose sum is σ = 166116344. Its totient is φ = 166116342.

The previous prime is 166116341. The next prime is 166116463. The reversal of 166116343 is 343611661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166116343 - 2¹ = 166116341 is a prime.

Together with 166116341, 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 (166116341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83058171 + 83058172.

It is an arithmetic number, because the mean of its divisors is an integer number (83058172).

Almost surely, 2^166116343 is an apocalyptic number.

166116343 is a deficient number, since it is larger than the sum of its proper divisors (1).

166116343 is an equidigital number, since it uses as much as digits as its factorization.

166116343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 166116343 is about 12888.6129199383. The cubic root of 166116343 is about 549.7148306806.

The spelling of 166116343 in words is "one hundred sixty-six million, one hundred sixteen thousand, three hundred forty-three".