55550555568 has 50 divisors (see below), whose sum is σ = 160779428084. Its totient is φ = 18516851424.

The previous prime is 55550555551. The next prime is 55550555573. The reversal of 55550555568 is 86555505555.

55550555568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21430246 + ... + 21432837.

Almost surely, 2^55550555568 is an apocalyptic number.

It is an amenable number.

55550555568 is an abundant number, since it is smaller than the sum of its proper divisors (105228872516).

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

55550555568 is a wasteful number, since it uses less digits than its factorization.

55550555568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42863103 (or 42863088 counting only the distinct ones).

The product of its (nonzero) digits is 18750000, while the sum is 54.

The spelling of 55550555568 in words is "fifty-five billion, five hundred fifty million, five hundred fifty-five thousand, five hundred sixty-eight".