550324221420 has 24 divisors (see below), whose sum is σ = 1540907820144. Its totient is φ = 146753125696.

The previous prime is 550324221353. The next prime is 550324221427. The reversal of 550324221420 is 24122423055.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (550324221427) 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, 4586035119 + ... + 4586035238.

It is an arithmetic number, because the mean of its divisors is an integer number (64204492506).

Almost surely, 2^550324221420 is an apocalyptic number.

It is an amenable number.

550324221420 is an abundant number, since it is smaller than the sum of its proper divisors (990583598724).

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

550324221420 is a wasteful number, since it uses less digits than its factorization.

550324221420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9172070369 (or 9172070367 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 550324221420 its reverse (24122423055), we get a palindrome (574446644475).

The spelling of 550324221420 in words is "five hundred fifty billion, three hundred twenty-four million, two hundred twenty-one thousand, four hundred twenty".