16066543 has 2 divisors, whose sum is σ = 16066544.
Its totient is φ = 16066542.
The previous prime is 16066541. The next prime is 16066549. The reversal of 16066543 is 34566061.
It is a weak prime.
It is an emirp because it is prime and its reverse (34566061) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 16066543 - 21 = 16066541 is a prime.
Together with 16066541, 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 (16066541) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8033271 + 8033272.
It is an arithmetic number, because the mean of its divisors is an integer number (8033272).
Almost surely, 216066543 is an apocalyptic number.
16066543 is a deficient number, since it is larger than the sum of its proper divisors (1).
16066543 is an equidigital number, since it uses as much as digits as its factorization.
16066543 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 12960, while the sum is 31.
The square root of 16066543 is about 4008.3092445569.
The cubic root of 16066543 is about 252.3330556759.
Note that the first 3 decimals are identical.
The spelling of 16066543 in words is "sixteen million, sixty-six thousand, five hundred forty-three".