21324443341263 has 16 divisors (see below), whose sum is σ = 29903540760576. Its totient is φ = 13498126031520.

The previous prime is 21324443341259. The next prime is 21324443341319. The reversal of 21324443341263 is 36214334442312.

It is not a de Polignac number, because 21324443341263 - 2² = 21324443341259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21324443341763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2163156295 + ... + 2163166152.

It is an arithmetic number, because the mean of its divisors is an integer number (1868971297536).

Almost surely, 2^{21324443341263} is an apocalyptic number.

21324443341263 is a deficient number, since it is larger than the sum of its proper divisors (8579097419313).

21324443341263 is a wasteful number, since it uses less digits than its factorization.

21324443341263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4326322534.

The product of its digits is 995328, while the sum is 42.

Adding to 21324443341263 its reverse (36214334442312), we get a palindrome (57538777783575).

The spelling of 21324443341263 in words is "twenty-one trillion, three hundred twenty-four billion, four hundred forty-three million, three hundred forty-one thousand, two hundred sixty-three".