21441032433 has 6 divisors (see below), whose sum is σ = 30970380194. Its totient is φ = 14294021616.

The previous prime is 21441032419. The next prime is 21441032443. The reversal of 21441032433 is 33423014412.

21441032433 is a `hidden beast` number, since 2 + 1 + 4 + 410 + 3 + 243 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20614354929 + 826677504 = 143577^2 + 28752^2 .

It is not a de Polignac number, because 21441032433 - 2¹⁸ = 21440770289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21441032397 and 21441032406.

It is not an unprimeable number, because it can be changed into a prime (21441032443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1191168460 + ... + 1191168477.

Almost surely, 2^21441032433 is an apocalyptic number.

It is an amenable number.

21441032433 is a deficient number, since it is larger than the sum of its proper divisors (9529347761).

21441032433 is a wasteful number, since it uses less digits than its factorization.

21441032433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382336943 (or 2382336940 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21441032433 its reverse (33423014412), we get a palindrome (54864046845).

The spelling of 21441032433 in words is "twenty-one billion, four hundred forty-one million, thirty-two thousand, four hundred thirty-three".