32443701021 has 24 divisors (see below), whose sum is σ = 48016443384. Its totient is φ = 21097059840.

The previous prime is 32443701001. The next prime is 32443701029. The reversal of 32443701021 is 12010734423.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 784616121 + 31659084900 = 28011^2 + 177930^2 .

It is not a de Polignac number, because 32443701021 - 2²¹ = 32441603869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32443701029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3056295 + ... + 3066891.

It is an arithmetic number, because the mean of its divisors is an integer number (2000685141).

Almost surely, 2^32443701021 is an apocalyptic number.

It is an amenable number.

32443701021 is a deficient number, since it is larger than the sum of its proper divisors (15572742363).

32443701021 is a wasteful number, since it uses less digits than its factorization.

32443701021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18941 (or 18938 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The spelling of 32443701021 in words is "thirty-two billion, four hundred forty-three million, seven hundred one thousand, twenty-one".