551333430321343 has 4 divisors (see below), whose sum is σ = 551748903894880. Its totient is φ = 550917956747808.

The previous prime is 551333430321269. The next prime is 551333430321367. The reversal of 551333430321343 is 343123034333155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 551333430321343 - 2³³ = 551324840386751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551333430321343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551333430351343) 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, 207736784778 + ... + 207736787431.

It is an arithmetic number, because the mean of its divisors is an integer number (137937225973720).

Almost surely, 2^{551333430321343} is an apocalyptic number.

551333430321343 is a deficient number, since it is larger than the sum of its proper divisors (415473573537).

551333430321343 is a wasteful number, since it uses less digits than its factorization.

551333430321343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415473573536.

The product of its (nonzero) digits is 1749600, while the sum is 43.

Adding to 551333430321343 its reverse (343123034333155), we get a palindrome (894456464654498).

The spelling of 551333430321343 in words is "five hundred fifty-one trillion, three hundred thirty-three billion, four hundred thirty million, three hundred twenty-one thousand, three hundred forty-three".