6544469897328 has 160 divisors (see below), whose sum is σ = 19175342199552. Its totient is φ = 1905924556800.

The previous prime is 6544469897293. The next prime is 6544469897377. The reversal of 6544469897328 is 8237989644456.

It is a self number, because there is not a number n which added to its sum of digits gives 6544469897328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 805651 + ... + 3706482.

Almost surely, 2^{6544469897328} is an apocalyptic number.

It is an amenable number.

6544469897328 is an abundant number, since it is smaller than the sum of its proper divisors (12630872302224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6544469897328 is a wasteful number, since it uses less digits than its factorization.

6544469897328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512263 (or 4512257 counting only the distinct ones).

The product of its digits is 2508226560, while the sum is 75.

The spelling of 6544469897328 in words is "six trillion, five hundred forty-four billion, four hundred sixty-nine million, eight hundred ninety-seven thousand, three hundred twenty-eight".