655543345556 has 96 divisors (see below), whose sum is σ = 1336414464000. Its totient is φ = 278057561600.

The previous prime is 655543345537. The next prime is 655543345559.

655543345556 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655543345559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146881781 + ... + 146886243.

It is an arithmetic number, because the mean of its divisors is an integer number (13920984000).

Almost surely, 2^655543345556 is an apocalyptic number.

It is an amenable number.

655543345556 is an abundant number, since it is smaller than the sum of its proper divisors (680871118444).

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

655543345556 is a wasteful number, since it uses less digits than its factorization.

655543345556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6125 (or 6123 counting only the distinct ones).

The product of its digits is 81000000, while the sum is 56.

The spelling of 655543345556 in words is "six hundred fifty-five billion, five hundred forty-three million, three hundred forty-five thousand, five hundred fifty-six".