550320263540 has 96 divisors (see below), whose sum is σ = 1223766835200. Its totient is φ = 207461713536.

The previous prime is 550320263503. The next prime is 550320263551. The reversal of 550320263540 is 45362023055.

It is a self number, because there is not a number n which added to its sum of digits gives 550320263540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9399437 + ... + 9457803.

It is an arithmetic number, because the mean of its divisors is an integer number (12747571200).

Almost surely, 2^550320263540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550320263540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611883417600).

550320263540 is an abundant number, since it is smaller than the sum of its proper divisors (673446571660).

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

550320263540 is a wasteful number, since it uses less digits than its factorization.

550320263540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58701 (or 58699 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 550320263540 its reverse (45362023055), we get a palindrome (595682286595).

The spelling of 550320263540 in words is "five hundred fifty billion, three hundred twenty million, two hundred sixty-three thousand, five hundred forty".