550320100000 has 216 divisors, whose sum is σ = 1488551906268. Its totient is φ = 200112000000.

The previous prime is 550320099949. The next prime is 550320100003. The reversal of 550320100000 is 1023055.

It can be written as a sum of positive squares in 6 ways, for example, as 219957248016 + 330362851984 = 468996^2 + 574772^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (550320100003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12077260 + ... + 12122740.

Almost surely, 2^550320100000 is an apocalyptic number.

550320100000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550320100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744275953134).

550320100000 is an abundant number, since it is smaller than the sum of its proper divisors (938231806268).

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

550320100000 is an equidigital number, since it uses as much as digits as its factorization.

550320100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45538 (or 45499 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

Adding to 550320100000 its reverse (1023055), we get a palindrome (550321123055).

The spelling of 550320100000 in words is "five hundred fifty billion, three hundred twenty million, one hundred thousand".