6544684524672 has 256 divisors, whose sum is σ = 22170087763200. Its totient is φ = 1861882896384.

The previous prime is 6544684524671. The next prime is 6544684524683. The reversal of 6544684524672 is 2764254864456.

6544684524672 is a `hidden beast` number, since 6 + 5 + 4 + 46 + 8 + 4 + 524 + 67 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (6544684524671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5056198 + ... + 6217274.

It is an arithmetic number, because the mean of its divisors is an integer number (86601905325).

Almost surely, 2^{6544684524672} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6544684524672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11085043881600).

6544684524672 is an abundant number, since it is smaller than the sum of its proper divisors (15625403238528).

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

6544684524672 is a wasteful number, since it uses less digits than its factorization.

6544684524672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161340 (or 1161322 counting only the distinct ones).

The product of its digits is 309657600, while the sum is 63.

The spelling of 6544684524672 in words is "six trillion, five hundred forty-four billion, six hundred eighty-four million, five hundred twenty-four thousand, six hundred seventy-two".