550505555556 has 96 divisors (see below), whose sum is σ = 1423513512960.
Its totient is φ = 164194128000.
The previous prime is 550505555531. The next prime is 550505555569. The reversal of 550505555556 is 655555505055.
It is a junction number, because it is equal to n+sod(n) for n = 550505555499 and 550505555508.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2045895 + ... + 2299281.
It is an arithmetic number, because the mean of its divisors is an integer number (14828265760).
Almost surely, 2550505555556 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 550505555556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711756756480).
550505555556 is an abundant number, since it is smaller than the sum of its proper divisors (873007957404).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
550505555556 is a wasteful number, since it uses less digits than its factorization.
550505555556 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 253665 (or 253663 counting only the distinct ones).
The product of its (nonzero) digits is 11718750, while the sum is 51.
The spelling of 550505555556 in words is "five hundred fifty billion, five hundred five million, five hundred fifty-five thousand, five hundred fifty-six".