6543166927680 has 224 divisors, whose sum is σ = 24297725750400. Its totient is φ = 1653010550784.

The previous prime is 6543166927637. The next prime is 6543166927709. The reversal of 6543166927680 is 867296613456.

6543166927680 is a `hidden beast` number, since 6 + 543 + 1 + 6 + 6 + 9 + 2 + 7 + 6 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19765077 + ... + 20093396.

It is a 1-persistent number, because it is pandigital, but 2⋅6543166927680 = 13086333855360 is not.

Almost surely, 2^{6543166927680} is an apocalyptic number.

6543166927680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6543166927680 is an abundant number, since it is smaller than the sum of its proper divisors (17754558822720).

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

6543166927680 is a wasteful number, since it uses less digits than its factorization.

6543166927680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39858518 (or 39858502 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 63.

The spelling of 6543166927680 in words is "six trillion, five hundred forty-three billion, one hundred sixty-six million, nine hundred twenty-seven thousand, six hundred eighty".