32444422421 has 4 divisors (see below), whose sum is σ = 32447654700. Its totient is φ = 32441190144.

The previous prime is 32444422399. The next prime is 32444422433. The reversal of 32444422421 is 12422444423.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18352120900 + 14092301521 = 135470^2 + 118711^2 .

It is a cyclic number.

It is not a de Polignac number, because 32444422421 - 2¹⁴ = 32444406037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32444422441) 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 3 ways as a sum of consecutive naturals, for example, 1601036 + ... + 1621173.

It is an arithmetic number, because the mean of its divisors is an integer number (8111913675).

Almost surely, 2^32444422421 is an apocalyptic number.

It is an amenable number.

32444422421 is a deficient number, since it is larger than the sum of its proper divisors (3232279).

32444422421 is a wasteful number, since it uses less digits than its factorization.

32444422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232278.

The product of its digits is 49152, while the sum is 32.

Adding to 32444422421 its reverse (12422444423), we get a palindrome (44866866844).

The spelling of 32444422421 in words is "thirty-two billion, four hundred forty-four million, four hundred twenty-two thousand, four hundred twenty-one".