655655544889 has 8 divisors (see below), whose sum is σ = 660885700608. Its totient is φ = 650431829280.

The previous prime is 655655544853. The next prime is 655655544923. The reversal of 655655544889 is 988445556556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655655544889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655655524889) 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 7 ways as a sum of consecutive naturals, for example, 1405497 + ... + 1812934.

It is an arithmetic number, because the mean of its divisors is an integer number (82610712576).

Almost surely, 2^655655544889 is an apocalyptic number.

It is an amenable number.

655655544889 is a deficient number, since it is larger than the sum of its proper divisors (5230155719).

655655544889 is a wasteful number, since it uses less digits than its factorization.

655655544889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220055.

The product of its digits is 1036800000, while the sum is 70.

The spelling of 655655544889 in words is "six hundred fifty-five billion, six hundred fifty-five million, five hundred forty-four thousand, eight hundred eighty-nine".