55555558308 has 72 divisors (see below), whose sum is σ = 142282908768. Its totient is φ = 18274958208.

The previous prime is 55555558301. The next prime is 55555558309. The reversal of 55555558308 is 80385555555.

55555558308 is a `hidden beast` number, since 5 + 5 + 5 + 5 + 55 + 583 + 0 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (55555558301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2789835 + ... + 2809677.

Almost surely, 2^55555558308 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 55555558308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71141454384).

55555558308 is an abundant number, since it is smaller than the sum of its proper divisors (86727350460).

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

55555558308 is a wasteful number, since it uses less digits than its factorization.

55555558308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20873 (or 20868 counting only the distinct ones).

The product of its (nonzero) digits is 15000000, while the sum is 54.

The spelling of 55555558308 in words is "fifty-five billion, five hundred fifty-five million, five hundred fifty-eight thousand, three hundred eight".