551340433112213 has 4 divisors (see below), whose sum is σ = 551340480840780. Its totient is φ = 551340385383648.

The previous prime is 551340433112171. The next prime is 551340433112243. The reversal of 551340433112213 is 312211334043155.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 98642597882404 + 452697835229809 = 9931898^2 + 21276697^2 .

It is a cyclic number.

It is not a de Polignac number, because 551340433112213 - 2⁶ = 551340433112149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551340433112243) 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, 5539331 + ... + 33665487.

It is an arithmetic number, because the mean of its divisors is an integer number (137835120210195).

Almost surely, 2^{551340433112213} is an apocalyptic number.

It is an amenable number.

551340433112213 is a deficient number, since it is larger than the sum of its proper divisors (47728567).

551340433112213 is a wasteful number, since it uses less digits than its factorization.

551340433112213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47728566.

The product of its (nonzero) digits is 129600, while the sum is 38.

Adding to 551340433112213 its reverse (312211334043155), we get a palindrome (863551767155368).

The spelling of 551340433112213 in words is "five hundred fifty-one trillion, three hundred forty billion, four hundred thirty-three million, one hundred twelve thousand, two hundred thirteen".