550045900000 has 144 divisors (see below), whose sum is σ = 1400223192480. Its totient is φ = 212430400000.

The previous prime is 550045899959. The next prime is 550045900003. The reversal of 550045900000 is 9540055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550045900003) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2805165 + ... + 2994835.

It is an arithmetic number, because the mean of its divisors is an integer number (9723772170).

Almost surely, 2^550045900000 is an apocalyptic number.

550045900000 is a gapful number since it is divisible by the number (50) 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 550045900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700111596240).

550045900000 is an abundant number, since it is smaller than the sum of its proper divisors (850177292480).

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

550045900000 is an equidigital number, since it uses as much as digits as its factorization.

550045900000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189735 (or 189707 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 550045900000 in words is "five hundred fifty billion, forty-five million, nine hundred thousand".