523553442113 has 4 divisors (see below), whose sum is σ = 563826783828. Its totient is φ = 483280100400.

The previous prime is 523553442107. The next prime is 523553442163. The reversal of 523553442113 is 311244355325.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52398872464 + 471154569649 = 228908^2 + 686407^2 .

It is a cyclic number.

It is not a de Polignac number, because 523553442113 - 2¹² = 523553438017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523553442163) 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, 20136670838 + ... + 20136670863.

It is an arithmetic number, because the mean of its divisors is an integer number (140956695957).

Almost surely, 2^523553442113 is an apocalyptic number.

It is an amenable number.

523553442113 is a deficient number, since it is larger than the sum of its proper divisors (40273341715).

523553442113 is a wasteful number, since it uses less digits than its factorization.

523553442113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40273341714.

The product of its digits is 216000, while the sum is 38.

Adding to 523553442113 its reverse (311244355325), we get a palindrome (834797797438).

The spelling of 523553442113 in words is "five hundred twenty-three billion, five hundred fifty-three million, four hundred forty-two thousand, one hundred thirteen".