503985330550 has 48 divisors (see below), whose sum is σ = 1036805796432. Its totient is φ = 181057507200.

The previous prime is 503985330503. The next prime is 503985330619. The reversal of 503985330550 is 55033589305.

It is a self number, because there is not a number n which added to its sum of digits gives 503985330550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10453816 + ... + 10501915.

It is an arithmetic number, because the mean of its divisors is an integer number (21600120759).

Almost surely, 2^503985330550 is an apocalyptic number.

503985330550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

503985330550 is an abundant number, since it is smaller than the sum of its proper divisors (532820465882).

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

503985330550 is a wasteful number, since it uses less digits than its factorization.

503985330550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20955793 (or 20955788 counting only the distinct ones).

The product of its (nonzero) digits is 1215000, while the sum is 46.

The spelling of 503985330550 in words is "five hundred three billion, nine hundred eighty-five million, three hundred thirty thousand, five hundred fifty".