21414344441113 has 4 divisors (see below), whose sum is σ = 23061601705828. Its totient is φ = 19767087176400.

The previous prime is 21414344441099. The next prime is 21414344441123. The reversal of 21414344441113 is 31114444341412.

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 10270050814864 + 11144293626249 = 3204692^2 + 3338307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21414344441113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21414344441123) 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, 823628632338 + ... + 823628632363.

It is an arithmetic number, because the mean of its divisors is an integer number (5765400426457).

Almost surely, 2^{21414344441113} is an apocalyptic number.

It is an amenable number.

21414344441113 is a deficient number, since it is larger than the sum of its proper divisors (1647257264715).

21414344441113 is a wasteful number, since it uses less digits than its factorization.

21414344441113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647257264714.

The product of its digits is 73728, while the sum is 37.

Adding to 21414344441113 its reverse (31114444341412), we get a palindrome (52528788782525).

The spelling of 21414344441113 in words is "twenty-one trillion, four hundred fourteen billion, three hundred forty-four million, four hundred forty-one thousand, one hundred thirteen".