6544241449 has 2 divisors, whose sum is σ = 6544241450. Its totient is φ = 6544241448.

The previous prime is 6544241411. The next prime is 6544241461. The reversal of 6544241449 is 9441424456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5371863849 + 1172377600 = 73293^2 + 34240^2 .

It is a cyclic number.

It is not a de Polignac number, because 6544241449 - 2¹³ = 6544233257 is a prime.

It is a super-2 number, since 2×6544241449² = 85654192285619239202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6544244449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272120724 + 3272120725.

It is an arithmetic number, because the mean of its divisors is an integer number (3272120725).

Almost surely, 2^6544241449 is an apocalyptic number.

It is an amenable number.

6544241449 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544241449 is an equidigital number, since it uses as much as digits as its factorization.

6544241449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 43.

The square root of 6544241449 is about 80896.4860114455. The cubic root of 6544241449 is about 1870.4801543761.

The spelling of 6544241449 in words is "six billion, five hundred forty-four million, two hundred forty-one thousand, four hundred forty-nine".