21343441443 has 8 divisors (see below), whose sum is σ = 28558481088. Its totient is φ = 14178681384.

The previous prime is 21343441423. The next prime is 21343441487. The reversal of 21343441443 is 34414434312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21343441443 - 2⁹ = 21343440931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21343441423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12568905 + ... + 12570602.

It is an arithmetic number, because the mean of its divisors is an integer number (3569810136).

Almost surely, 2^21343441443 is an apocalyptic number.

21343441443 is a deficient number, since it is larger than the sum of its proper divisors (7215039645).

21343441443 is a wasteful number, since it uses less digits than its factorization.

21343441443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25139793.

The product of its digits is 55296, while the sum is 33.

Adding to 21343441443 its reverse (34414434312), we get a palindrome (55757875755).

The spelling of 21343441443 in words is "twenty-one billion, three hundred forty-three million, four hundred forty-one thousand, four hundred forty-three".