550455409728 has 504 divisors, whose sum is σ = 1972461640032. Its totient is φ = 145803829248.

The previous prime is 550455409717. The next prime is 550455409733. The reversal of 550455409728 is 827904554055.

550455409728 is a `hidden beast` number, since 5 + 5 + 0 + 4 + 5 + 540 + 97 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 32138575 + ... + 32155697.

Almost surely, 2^550455409728 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 550455409728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986230820016).

550455409728 is an abundant number, since it is smaller than the sum of its proper divisors (1422006230304).

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

550455409728 is a wasteful number, since it uses less digits than its factorization.

550455409728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17239 (or 17219 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 54.

The spelling of 550455409728 in words is "five hundred fifty billion, four hundred fifty-five million, four hundred nine thousand, seven hundred twenty-eight".