6545468528640 has 288 divisors, whose sum is σ = 23525627383440. Its totient is φ = 1745457610752.

The previous prime is 6545468528611. The next prime is 6545468528659. The reversal of 6545468528640 is 468258645456.

6545468528640 is a `hidden beast` number, since 6 + 5 + 4 + 5 + 4 + 68 + 528 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1173082 + ... + 3803558.

Almost surely, 2^{6545468528640} is an apocalyptic number.

6545468528640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6545468528640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11762813691720).

6545468528640 is an abundant number, since it is smaller than the sum of its proper divisors (16980158854800).

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

6545468528640 is an equidigital number, since it uses as much as digits as its factorization.

6545468528640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630519 (or 2630487 counting only the distinct ones).

The product of its (nonzero) digits is 221184000, while the sum is 63.

The spelling of 6545468528640 in words is "six trillion, five hundred forty-five billion, four hundred sixty-eight million, five hundred twenty-eight thousand, six hundred forty".