6544241549 has 4 divisors (see below), whose sum is σ = 6641916864. Its totient is φ = 6446566236.

The previous prime is 6544241531. The next prime is 6544241567. The reversal of 6544241549 is 9451424456.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6544241531) and next prime (6544241567).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6544241549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6544241449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48837557 + ... + 48837690.

It is an arithmetic number, because the mean of its divisors is an integer number (1660479216).

Almost surely, 2^6544241549 is an apocalyptic number.

It is an amenable number.

6544241549 is a deficient number, since it is larger than the sum of its proper divisors (97675315).

6544241549 is an equidigital number, since it uses as much as digits as its factorization.

6544241549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97675314.

The product of its digits is 691200, while the sum is 44.

The square root of 6544241549 is about 80896.4866295193. The cubic root of 6544241549 is about 1870.4801639035.

The spelling of 6544241549 in words is "six billion, five hundred forty-four million, two hundred forty-one thousand, five hundred forty-nine".