6544241644 has 6 divisors (see below), whose sum is σ = 11452422884. Its totient is φ = 3272120820.

The previous prime is 6544241629. The next prime is 6544241651. The reversal of 6544241644 is 4461424456.

It is a junction number, because it is equal to n+sod(n) for n = 6544241597 and 6544241606.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 818030202 + ... + 818030209.

Almost surely, 2^6544241644 is an apocalyptic number.

It is an amenable number.

6544241644 is a deficient number, since it is larger than the sum of its proper divisors (4908181240).

6544241644 is a wasteful number, since it uses less digits than its factorization.

6544241644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636060415 (or 1636060413 counting only the distinct ones).

The product of its digits is 368640, while the sum is 40.

The square root of 6544241644 is about 80896.4872166895. The cubic root of 6544241644 is about 1870.4801729545.

The spelling of 6544241644 in words is "six billion, five hundred forty-four million, two hundred forty-one thousand, six hundred forty-four".