550021443320 has 32 divisors (see below), whose sum is σ = 1237800787200. Its totient is φ = 219963681408.

The previous prime is 550021443317. The next prime is 550021443371. The reversal of 550021443320 is 23344120055.

It is a happy number.

It is a super-2 number, since 2×550021443320² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204184 + ... + 1596903.

It is an arithmetic number, because the mean of its divisors is an integer number (38681274600).

Almost surely, 2^550021443320 is an apocalyptic number.

It is an amenable number.

550021443320 is an abundant number, since it is smaller than the sum of its proper divisors (687779343880).

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

550021443320 is a wasteful number, since it uses less digits than its factorization.

550021443320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806007 (or 2806003 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 550021443320 its reverse (23344120055), we get a palindrome (573365563375).

The spelling of 550021443320 in words is "five hundred fifty billion, twenty-one million, four hundred forty-three thousand, three hundred twenty".