21324433442313 has 64 divisors (see below), whose sum is σ = 30230437386240. Its totient is φ = 13333028239872.

The previous prime is 21324433442293. The next prime is 21324433442321. The reversal of 21324433442313 is 31324433442312.

It is not a de Polignac number, because 21324433442313 - 2³⁴ = 21307253573129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21324433442353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4978852270 + ... + 4978856552.

It is an arithmetic number, because the mean of its divisors is an integer number (472350584160).

Almost surely, 2^{21324433442313} is an apocalyptic number.

It is an amenable number.

21324433442313 is a deficient number, since it is larger than the sum of its proper divisors (8906003943927).

21324433442313 is a wasteful number, since it uses less digits than its factorization.

21324433442313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046.

The product of its digits is 497664, while the sum is 39.

Adding to 21324433442313 its reverse (31324433442312), we get a palindrome (52648866884625).

Subtracting 21324433442313 from its reverse (31324433442312), we obtain a palindrome (9999999999999).

The spelling of 21324433442313 in words is "twenty-one trillion, three hundred twenty-four billion, four hundred thirty-three million, four hundred forty-two thousand, three hundred thirteen".