32220441643 has 4 divisors (see below), whose sum is σ = 34698937168. Its totient is φ = 29741946120.

The previous prime is 32220441629. The next prime is 32220441647. The reversal of 32220441643 is 34614402223.

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

It is a cyclic number.

It is not a de Polignac number, because 32220441643 - 2⁵ = 32220441611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32220441647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239247743 + ... + 1239247768.

It is an arithmetic number, because the mean of its divisors is an integer number (8674734292).

Almost surely, 2^32220441643 is an apocalyptic number.

32220441643 is a deficient number, since it is larger than the sum of its proper divisors (2478495525).

32220441643 is a wasteful number, since it uses less digits than its factorization.

32220441643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478495524.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 32220441643 its reverse (34614402223), we get a palindrome (66834843866).

The spelling of 32220441643 in words is "thirty-two billion, two hundred twenty million, four hundred forty-one thousand, six hundred forty-three".