550215423440 has 40 divisors (see below), whose sum is σ = 1313825214120. Its totient is φ = 214137893376.

The previous prime is 550215423379. The next prime is 550215423463. The reversal of 550215423440 is 44324512055.

It can be written as a sum of positive squares in 4 ways, for example, as 60293820304 + 489921603136 = 245548^2 + 699944^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 550215423440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92938835 + ... + 92944754.

It is an arithmetic number, because the mean of its divisors is an integer number (32845630353).

Almost surely, 2^550215423440 is an apocalyptic number.

It is an amenable number.

550215423440 is an abundant number, since it is smaller than the sum of its proper divisors (763609790680).

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

550215423440 is a wasteful number, since it uses less digits than its factorization.

550215423440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185883639 (or 185883633 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 550215423440 its reverse (44324512055), we get a palindrome (594539935495).

The spelling of 550215423440 in words is "five hundred fifty billion, two hundred fifteen million, four hundred twenty-three thousand, four hundred forty".