6556005625668 has 12 divisors (see below), whose sum is σ = 15297346459920. Its totient is φ = 2185335208552.

The previous prime is 6556005625661. The next prime is 6556005625723. The reversal of 6556005625668 is 8665265006556.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (6556005625661) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 273166901058 + ... + 273166901081.

It is an arithmetic number, because the mean of its divisors is an integer number (1274778871660).

Almost surely, 2^{6556005625668} is an apocalyptic number.

It is an amenable number.

6556005625668 is an abundant number, since it is smaller than the sum of its proper divisors (8741340834252).

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

6556005625668 is a wasteful number, since it uses less digits than its factorization.

6556005625668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546333802146 (or 546333802144 counting only the distinct ones).

The product of its (nonzero) digits is 77760000, while the sum is 60.

The spelling of 6556005625668 in words is "six trillion, five hundred fifty-six billion, five million, six hundred twenty-five thousand, six hundred sixty-eight".