16431743543 has 2 divisors, whose sum is σ = 16431743544. Its totient is φ = 16431743542.

The previous prime is 16431743509. The next prime is 16431743591. The reversal of 16431743543 is 34534713461.

16431743543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16431743543 - 2⁸ = 16431743287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16431743543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16431743243) 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, 8215871771 + 8215871772.

It is an arithmetic number, because the mean of its divisors is an integer number (8215871772).

Almost surely, 2^16431743543 is an apocalyptic number.

16431743543 is a deficient number, since it is larger than the sum of its proper divisors (1).

16431743543 is an equidigital number, since it uses as much as digits as its factorization.

16431743543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 41.

The spelling of 16431743543 in words is "sixteen billion, four hundred thirty-one million, seven hundred forty-three thousand, five hundred forty-three".