21443304034 has 16 divisors (see below), whose sum is σ = 32288961600. Its totient is φ = 10680349680.

The previous prime is 21443304013. The next prime is 21443304053. The reversal of 21443304034 is 43040334412.

It is a junction number, because it is equal to n+sod(n) for n = 21443303993 and 21443304011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1593667 + ... + 1607065.

It is an arithmetic number, because the mean of its divisors is an integer number (2018060100).

Almost surely, 2^21443304034 is an apocalyptic number.

21443304034 is a deficient number, since it is larger than the sum of its proper divisors (10845657566).

21443304034 is a wasteful number, since it uses less digits than its factorization.

21443304034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16425.

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

Adding to 21443304034 its reverse (43040334412), we get a palindrome (64483638446).

The spelling of 21443304034 in words is "twenty-one billion, four hundred forty-three million, three hundred four thousand, thirty-four".