8550885840 has 160 divisors (see below), whose sum is σ = 30325368576. Its totient is φ = 1952501760.

The previous prime is 8550885839. The next prime is 8550885853. The reversal of 8550885840 is 485880558.

It is a Cunningham number, because it is equal to 92471²-1.

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, 2217354 + ... + 2221206.

Almost surely, 2^8550885840 is an apocalyptic number.

8550885840 is a gapful number since it is divisible by the number (80) 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 8550885840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15162684288).

8550885840 is an abundant number, since it is smaller than the sum of its proper divisors (21774482736).

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

8550885840 is a wasteful number, since it uses less digits than its factorization.

8550885840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5197 (or 5191 counting only the distinct ones).

The product of its (nonzero) digits is 2048000, while the sum is 51.

The square root of 8550885840 is about 92470.9999945929. Note that the first 5 decimals coincide. The cubic root of 8550885840 is about 2044.8919696720.

The spelling of 8550885840 in words is "eight billion, five hundred fifty million, eight hundred eighty-five thousand, eight hundred forty".