21433005304 has 32 divisors (see below), whose sum is σ = 40274900640. Its totient is φ = 10693065600.

The previous prime is 21433005301. The next prime is 21433005311. The reversal of 21433005304 is 40350033412.

It is a super-2 number, since 2×21433005304² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21433005301) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12309874 + ... + 12311614.

It is an arithmetic number, because the mean of its divisors is an integer number (1258590645).

Almost surely, 2^21433005304 is an apocalyptic number.

It is an amenable number.

21433005304 is a deficient number, since it is larger than the sum of its proper divisors (18841895336).

21433005304 is a wasteful number, since it uses less digits than its factorization.

21433005304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231 (or 4227 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 21433005304 its reverse (40350033412), we get a palindrome (61783038716).

The spelling of 21433005304 in words is "twenty-one billion, four hundred thirty-three million, five thousand, three hundred four".