550223215444 has 24 divisors (see below), whose sum is σ = 1101550244480. Its totient is φ = 235573418016.

The previous prime is 550223215357. The next prime is 550223215447. The reversal of 550223215444 is 444512322055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550223215447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9827064 + ... + 9882895.

Almost surely, 2^550223215444 is an apocalyptic number.

It is an amenable number.

550223215444 is an abundant number, since it is smaller than the sum of its proper divisors (551327029036).

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

550223215444 is a wasteful number, since it uses less digits than its factorization.

550223215444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19710967 (or 19710965 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 550223215444 its reverse (444512322055), we get a palindrome (994735537499).

The spelling of 550223215444 in words is "five hundred fifty billion, two hundred twenty-three million, two hundred fifteen thousand, four hundred forty-four".