6544006550 has 12 divisors (see below), whose sum is σ = 12171852276. Its totient is φ = 2617602600.

The previous prime is 6544006549. The next prime is 6544006559. The reversal of 6544006550 is 556004456.

It is a self number, because there is not a number n which added to its sum of digits gives 6544006550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6544006559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65440016 + ... + 65440115.

It is an arithmetic number, because the mean of its divisors is an integer number (1014321023).

Almost surely, 2^6544006550 is an apocalyptic number.

6544006550 is a deficient number, since it is larger than the sum of its proper divisors (5627845726).

6544006550 is a wasteful number, since it uses less digits than its factorization.

6544006550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130880143 (or 130880138 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 6544006550 is about 80895.0341491986. The cubic root of 6544006550 is about 1870.4577744371.

The spelling of 6544006550 in words is "six billion, five hundred forty-four million, six thousand, five hundred fifty".