551505331040144 has 20 divisors (see below), whose sum is σ = 1150737084959196. Its totient is φ = 254540922018432.

The previous prime is 551505331040143. The next prime is 551505331040177. The reversal of 551505331040144 is 441040133505155.

It can be written as a sum of positive squares in 2 ways, for example, as 346793334822544 + 204711996217600 = 18622388^2 + 14307760^2 .

It is not an unprimeable number, because it can be changed into a prime (551505331040141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325733968639 + ... + 1325733969054.

Almost surely, 2^{551505331040144} is an apocalyptic number.

It is an amenable number.

551505331040144 is an abundant number, since it is smaller than the sum of its proper divisors (599231753919052).

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

551505331040144 is a wasteful number, since it uses less digits than its factorization.

551505331040144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651467937714 (or 2651467937708 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

Adding to 551505331040144 its reverse (441040133505155), we get a palindrome (992545464545299).

The spelling of 551505331040144 in words is "five hundred fifty-one trillion, five hundred five billion, three hundred thirty-one million, forty thousand, one hundred forty-four".