545034443561 has 2 divisors, whose sum is σ = 545034443562. Its totient is φ = 545034443560.

The previous prime is 545034443543. The next prime is 545034443563. The reversal of 545034443561 is 165344430545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535355622400 + 9678821161 = 731680^2 + 98381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545034443561 is a prime.

It is a Sophie Germain prime.

Together with 545034443563, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (545034443563) 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, 272517221780 + 272517221781.

It is an arithmetic number, because the mean of its divisors is an integer number (272517221781).

Almost surely, 2^545034443561 is an apocalyptic number.

It is an amenable number.

545034443561 is a deficient number, since it is larger than the sum of its proper divisors (1).

545034443561 is an equidigital number, since it uses as much as digits as its factorization.

545034443561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 545034443561 in words is "five hundred forty-five billion, thirty-four million, four hundred forty-three thousand, five hundred sixty-one".