21344441324 has 48 divisors (see below), whose sum is σ = 42048393408. Its totient is φ = 9426413568.

The previous prime is 21344441297. The next prime is 21344441333. The reversal of 21344441324 is 42314444312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45857 + ... + 211640.

It is an arithmetic number, because the mean of its divisors is an integer number (876008196).

Almost surely, 2^21344441324 is an apocalyptic number.

It is an amenable number.

21344441324 is a deficient number, since it is larger than the sum of its proper divisors (20703952084).

21344441324 is a wasteful number, since it uses less digits than its factorization.

21344441324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257594 (or 257592 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

Adding to 21344441324 its reverse (42314444312), we get a palindrome (63658885636).

The spelling of 21344441324 in words is "twenty-one billion, three hundred forty-four million, four hundred forty-one thousand, three hundred twenty-four".