21032332443 has 12 divisors (see below), whose sum is σ = 30426999408. Its totient is φ = 13999879440.

The previous prime is 21032332427. The next prime is 21032332513. The reversal of 21032332443 is 34423323012.

21032332443 is a `hidden beast` number, since 2 + 10 + 323 + 324 + 4 + 3 = 666.

It is not a de Polignac number, because 21032332443 - 2⁴ = 21032332427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21032312443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1800148 + ... + 1811793.

It is an arithmetic number, because the mean of its divisors is an integer number (2535583284).

Almost surely, 2^21032332443 is an apocalyptic number.

21032332443 is a deficient number, since it is larger than the sum of its proper divisors (9394666965).

21032332443 is a wasteful number, since it uses less digits than its factorization.

21032332443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612594 (or 3612591 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 21032332443 its reverse (34423323012), we get a palindrome (55455655455).

The spelling of 21032332443 in words is "twenty-one billion, thirty-two million, three hundred thirty-two thousand, four hundred forty-three".