16543332241 has 2 divisors, whose sum is σ = 16543332242. Its totient is φ = 16543332240.

The previous prime is 16543332229. The next prime is 16543332259. The reversal of 16543332241 is 14223334561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16302182400 + 241149841 = 127680^2 + 15529^2 .

It is an emirp because it is prime and its reverse (14223334561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16543332241 - 2⁹ = 16543331729 is a prime.

It is a super-2 number, since 2×16543332241² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16543332197 and 16543332206.

It is not a weakly prime, because it can be changed into another prime (16543332341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8271666120 + 8271666121.

It is an arithmetic number, because the mean of its divisors is an integer number (8271666121).

Almost surely, 2^16543332241 is an apocalyptic number.

It is an amenable number.

16543332241 is a deficient number, since it is larger than the sum of its proper divisors (1).

16543332241 is an equidigital number, since it uses as much as digits as its factorization.

16543332241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 34.

The spelling of 16543332241 in words is "sixteen billion, five hundred forty-three million, three hundred thirty-two thousand, two hundred forty-one".