55555605056 has 112 divisors (see below), whose sum is σ = 133743508992. Its totient is φ = 22351872000.

The previous prime is 55555605041. The next prime is 55555605059. The reversal of 55555605056 is 65050655555.

55555605056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 55555605056.

It is not an unprimeable number, because it can be changed into a prime (55555605059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3044921 + ... + 3063111.

Almost surely, 2^55555605056 is an apocalyptic number.

55555605056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55555605056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66871754496).

55555605056 is an abundant number, since it is smaller than the sum of its proper divisors (78187903936).

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

55555605056 is a wasteful number, since it uses less digits than its factorization.

55555605056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18628 (or 18618 counting only the distinct ones).

The product of its (nonzero) digits is 2812500, while the sum is 47.

The spelling of 55555605056 in words is "fifty-five billion, five hundred fifty-five million, six hundred five thousand, fifty-six".