21433441332 has 24 divisors (see below), whose sum is σ = 51174419296. Its totient is φ = 6978329568.

The previous prime is 21433441297. The next prime is 21433441333. The reversal of 21433441332 is 23314433412.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 21433441332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21433441333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20768323 + ... + 20769354.

Almost surely, 2^21433441332 is an apocalyptic number.

It is an amenable number.

21433441332 is an abundant number, since it is smaller than the sum of its proper divisors (29740977964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21433441332 is a wasteful number, since it uses less digits than its factorization.

21433441332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41537727 (or 41537725 counting only the distinct ones).

The product of its digits is 20736, while the sum is 30.

Adding to 21433441332 its reverse (23314433412), we get a palindrome (44747874744).

The spelling of 21433441332 in words is "twenty-one billion, four hundred thirty-three million, four hundred forty-one thousand, three hundred thirty-two".