543689045489 has 2 divisors, whose sum is σ = 543689045490. Its totient is φ = 543689045488.

The previous prime is 543689045477. The next prime is 543689045593. The reversal of 543689045489 is 984540986345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 530117960464 + 13571085025 = 728092^2 + 116495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543689045489 is a prime.

It is a super-2 number, since 2×543689045489² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (543689045989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271844522744 + 271844522745.

It is an arithmetic number, because the mean of its divisors is an integer number (271844522745).

Almost surely, 2^543689045489 is an apocalyptic number.

It is an amenable number.

543689045489 is a deficient number, since it is larger than the sum of its proper divisors (1).

543689045489 is an equidigital number, since it uses as much as digits as its factorization.

543689045489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 149299200, while the sum is 65.

The spelling of 543689045489 in words is "five hundred forty-three billion, six hundred eighty-nine million, forty-five thousand, four hundred eighty-nine".