21334053053413 has 4 divisors (see below), whose sum is σ = 21336201724140. Its totient is φ = 21331904382688.

The previous prime is 21334053053399. The next prime is 21334053053419. The reversal of 21334053053413 is 31435035043312.

It is a happy number.

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 4302732935809 + 17031320117604 = 2074303^2 + 4126902^2 .

It is a cyclic number.

It is not a de Polignac number, because 21334053053413 - 2⁵ = 21334053053381 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 (21334053053419) 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, 1074320470 + ... + 1074340327.

It is an arithmetic number, because the mean of its divisors is an integer number (5334050431035).

Almost surely, 2^{21334053053413} is an apocalyptic number.

It is an amenable number.

21334053053413 is a deficient number, since it is larger than the sum of its proper divisors (2148670727).

21334053053413 is an equidigital number, since it uses as much as digits as its factorization.

21334053053413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148670726.

The product of its (nonzero) digits is 194400, while the sum is 37.

Adding to 21334053053413 its reverse (31435035043312), we get a palindrome (52769088096725).

The spelling of 21334053053413 in words is "twenty-one trillion, three hundred thirty-four billion, fifty-three million, fifty-three thousand, four hundred thirteen".