32144430021 has 32 divisors (see below), whose sum is σ = 48423038976. Its totient is φ = 18798360000.

The previous prime is 32144430013. The next prime is 32144430053. The reversal of 32144430021 is 12003444123.

It is not a de Polignac number, because 32144430021 - 2³ = 32144430013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 32144429973 and 32144430000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32144430121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35830 + ... + 256071.

It is an arithmetic number, because the mean of its divisors is an integer number (1513219968).

Almost surely, 2^32144430021 is an apocalyptic number.

It is an amenable number.

32144430021 is a deficient number, since it is larger than the sum of its proper divisors (16278608955).

32144430021 is a wasteful number, since it uses less digits than its factorization.

32144430021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292033.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 32144430021 its reverse (12003444123), we get a palindrome (44147874144).

The spelling of 32144430021 in words is "thirty-two billion, one hundred forty-four million, four hundred thirty thousand, twenty-one".