16543138043 has 8 divisors (see below), whose sum is σ = 16993655328. Its totient is φ = 16092800064.

The previous prime is 16543138037. The next prime is 16543138049. The reversal of 16543138043 is 34083134561.

16543138043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16543138037) and next prime (16543138049).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16543138043 - 2⁶ = 16543137979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16543137988 and 16543138006.

It is not an unprimeable number, because it can be changed into a prime (16543138049) 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 in 7 ways as a sum of consecutive naturals, for example, 154055 + ... + 238367.

It is an arithmetic number, because the mean of its divisors is an integer number (2124206916).

Almost surely, 2^16543138043 is an apocalyptic number.

16543138043 is a deficient number, since it is larger than the sum of its proper divisors (450517285).

16543138043 is an equidigital number, since it uses as much as digits as its factorization.

16543138043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89653.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 16543138043 in words is "sixteen billion, five hundred forty-three million, one hundred thirty-eight thousand, forty-three".