32021040440 has 16 divisors (see below), whose sum is σ = 72047341080. Its totient is φ = 12808416160.

The previous prime is 32021040433. The next prime is 32021040509. The reversal of 32021040440 is 4404012023.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400262966 + ... + 400263045.

Almost surely, 2^32021040440 is an apocalyptic number.

It is an amenable number.

32021040440 is an abundant number, since it is smaller than the sum of its proper divisors (40026300640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32021040440 is a wasteful number, since it uses less digits than its factorization.

32021040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800526022 (or 800526018 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 32021040440 its reverse (4404012023), we get a palindrome (36425052463).

The spelling of 32021040440 in words is "thirty-two billion, twenty-one million, forty thousand, four hundred forty".