6544206760549 has 2 divisors, whose sum is σ = 6544206760550. Its totient is φ = 6544206760548.

The previous prime is 6544206760541. The next prime is 6544206760577. The reversal of 6544206760549 is 9450676024456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5678655638049 + 865551122500 = 2382993^2 + 930350^2 .

It is a cyclic number.

It is not a de Polignac number, because 6544206760549 - 2³ = 6544206760541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6544206760493 and 6544206760502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6544206760541) 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, 3272103380274 + 3272103380275.

It is an arithmetic number, because the mean of its divisors is an integer number (3272103380275).

Almost surely, 2^{6544206760549} is an apocalyptic number.

It is an amenable number.

6544206760549 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544206760549 is an equidigital number, since it uses as much as digits as its factorization.

6544206760549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43545600, while the sum is 58.

The spelling of 6544206760549 in words is "six trillion, five hundred forty-four billion, two hundred six million, seven hundred sixty thousand, five hundred forty-nine".