32445345221 has 16 divisors (see below), whose sum is σ = 32970197568. Its totient is φ = 31925836800.

The previous prime is 32445345211. The next prime is 32445345227. The reversal of 32445345221 is 12254354423.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 32445345221 - 2⁶ = 32445345157 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 (32445345227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8366735 + ... + 8370611.

It is an arithmetic number, because the mean of its divisors is an integer number (2060637348).

Almost surely, 2^32445345221 is an apocalyptic number.

It is an amenable number.

32445345221 is a deficient number, since it is larger than the sum of its proper divisors (524852347).

32445345221 is a wasteful number, since it uses less digits than its factorization.

32445345221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4532.

The product of its digits is 115200, while the sum is 35.

Adding to 32445345221 its reverse (12254354423), we get a palindrome (44699699644).

The spelling of 32445345221 in words is "thirty-two billion, four hundred forty-five million, three hundred forty-five thousand, two hundred twenty-one".