655558369648 has 160 divisors (see below), whose sum is σ = 1602407439360. Its totient is φ = 252854507520.

The previous prime is 655558369619. The next prime is 655558369709. The reversal of 655558369648 is 846963855556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140104173 + ... + 140108851.

It is an arithmetic number, because the mean of its divisors is an integer number (10015046496).

Almost surely, 2^655558369648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655558369648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (801203719680).

655558369648 is an abundant number, since it is smaller than the sum of its proper divisors (946849069712).

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

655558369648 is a wasteful number, since it uses less digits than its factorization.

655558369648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7095 (or 7089 counting only the distinct ones).

The product of its digits is 933120000, while the sum is 70.

The spelling of 655558369648 in words is "six hundred fifty-five billion, five hundred fifty-eight million, three hundred sixty-nine thousand, six hundred forty-eight".