550355325520 has 480 divisors, whose sum is σ = 1742121997056. Its totient is φ = 157331496960.

The previous prime is 550355325517. The next prime is 550355325539. The reversal of 550355325520 is 25523553055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 143581524 + ... + 143585356.

Almost surely, 2^550355325520 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 550355325520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (871060998528).

550355325520 is an abundant number, since it is smaller than the sum of its proper divisors (1191766671536).

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

550355325520 is a wasteful number, since it uses less digits than its factorization.

550355325520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051 (or 4034 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 40.

Adding to 550355325520 its reverse (25523553055), we get a palindrome (575878878575).

The spelling of 550355325520 in words is "five hundred fifty billion, three hundred fifty-five million, three hundred twenty-five thousand, five hundred twenty".