6681456568548 has 72 divisors (see below), whose sum is σ = 17683701392448. Its totient is φ = 2123048693568.

The previous prime is 6681456568537. The next prime is 6681456568597. The reversal of 6681456568548 is 8458656541866.

6681456568548 is a `hidden beast` number, since 6 + 6 + 8 + 1 + 4 + 5 + 6 + 568 + 54 + 8 = 666.

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, 13527690 + ... + 14012897.

It is an arithmetic number, because the mean of its divisors is an integer number (245606963784).

Almost surely, 2^{6681456568548} is an apocalyptic number.

It is an amenable number.

6681456568548 is an abundant number, since it is smaller than the sum of its proper divisors (11002244823900).

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

6681456568548 is a wasteful number, since it uses less digits than its factorization.

6681456568548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27540913 (or 27540908 counting only the distinct ones).

The product of its digits is 1327104000, while the sum is 72.

The spelling of 6681456568548 in words is "six trillion, six hundred eighty-one billion, four hundred fifty-six million, five hundred sixty-eight thousand, five hundred forty-eight".