6544487441 has 2 divisors, whose sum is σ = 6544487442. Its totient is φ = 6544487440.

The previous prime is 6544487431. The next prime is 6544487447. The reversal of 6544487441 is 1447844456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5397987841 + 1146499600 = 73471^2 + 33860^2 .

It is a cyclic number.

It is not a de Polignac number, because 6544487441 - 2¹⁴ = 6544471057 is a prime.

It is not a weakly prime, because it can be changed into another prime (6544487447) 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, 3272243720 + 3272243721.

It is an arithmetic number, because the mean of its divisors is an integer number (3272243721).

Almost surely, 2^6544487441 is an apocalyptic number.

It is an amenable number.

6544487441 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544487441 is an equidigital number, since it uses as much as digits as its factorization.

6544487441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1720320, while the sum is 47.

The square root of 6544487441 is about 80898.0064093053. The cubic root of 6544487441 is about 1870.5035906237.

The spelling of 6544487441 in words is "six billion, five hundred forty-four million, four hundred eighty-seven thousand, four hundred forty-one".