6544049257 has 2 divisors, whose sum is σ = 6544049258. Its totient is φ = 6544049256.

The previous prime is 6544049233. The next prime is 6544049311. The reversal of 6544049257 is 7529404456.

6544049257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5882736601 + 661312656 = 76699^2 + 25716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6544049257 is a prime.

It is not a weakly prime, because it can be changed into another prime (6544049357) 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, 3272024628 + 3272024629.

It is an arithmetic number, because the mean of its divisors is an integer number (3272024629).

Almost surely, 2^6544049257 is an apocalyptic number.

It is an amenable number.

6544049257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544049257 is an equidigital number, since it uses as much as digits as its factorization.

6544049257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The square root of 6544049257 is about 80895.2981142909. The cubic root of 6544049257 is about 1870.4618433748.

The spelling of 6544049257 in words is "six billion, five hundred forty-four million, forty-nine thousand, two hundred fifty-seven".