16543732789 has 2 divisors, whose sum is σ = 16543732790. Its totient is φ = 16543732788.

The previous prime is 16543732717. The next prime is 16543732811. The reversal of 16543732789 is 98723734561.

16543732789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16521246225 + 22486564 = 128535^2 + 4742^2 .

It is a cyclic number.

It is not a de Polignac number, because 16543732789 - 2²³ = 16535344181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16543736789) 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, 8271866394 + 8271866395.

It is an arithmetic number, because the mean of its divisors is an integer number (8271866395).

Almost surely, 2^16543732789 is an apocalyptic number.

It is an amenable number.

16543732789 is a deficient number, since it is larger than the sum of its proper divisors (1).

16543732789 is an equidigital number, since it uses as much as digits as its factorization.

16543732789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 55.

The spelling of 16543732789 in words is "sixteen billion, five hundred forty-three million, seven hundred thirty-two thousand, seven hundred eighty-nine".