21343044034 has 16 divisors (see below), whose sum is σ = 34962822720. Its totient is φ = 9711893520.

The previous prime is 21343044001. The next prime is 21343044059. The reversal of 21343044034 is 43044034312.

It is a junction number, because it is equal to n+sod(n) for n = 21343043993 and 21343044011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5779044 + ... + 5782735.

It is an arithmetic number, because the mean of its divisors is an integer number (2185176420).

Almost surely, 2^21343044034 is an apocalyptic number.

21343044034 is a deficient number, since it is larger than the sum of its proper divisors (13619778686).

21343044034 is a wasteful number, since it uses less digits than its factorization.

21343044034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11561865.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21343044034 its reverse (43044034312), we get a palindrome (64387078346).

The spelling of 21343044034 in words is "twenty-one billion, three hundred forty-three million, forty-four thousand, thirty-four".