550135040440 has 32 divisors (see below), whose sum is σ = 1239405209280. Its totient is φ = 219769328512.

The previous prime is 550135040401. The next prime is 550135040443. The reversal of 550135040440 is 44040531055.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550135040443) 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, 8865184 + ... + 8927023.

It is an arithmetic number, because the mean of its divisors is an integer number (38731412790).

Almost surely, 2^550135040440 is an apocalyptic number.

It is an amenable number.

550135040440 is an abundant number, since it is smaller than the sum of its proper divisors (689270168840).

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

550135040440 is a wasteful number, since it uses less digits than its factorization.

550135040440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17792991 (or 17792987 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 550135040440 its reverse (44040531055), we get a palindrome (594175571495).

The spelling of 550135040440 in words is "five hundred fifty billion, one hundred thirty-five million, forty thousand, four hundred forty".