32144403421 has 4 divisors (see below), whose sum is σ = 34617049852. Its totient is φ = 29671756992.

The previous prime is 32144403397. The next prime is 32144403443. The reversal of 32144403421 is 12430444123.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9969024025 + 22175379396 = 99845^2 + 148914^2 .

It is a cyclic number.

It is not a de Polignac number, because 32144403421 - 2¹⁹ = 32143879133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32144403421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32144473421) 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, 1236323196 + ... + 1236323221.

It is an arithmetic number, because the mean of its divisors is an integer number (8654262463).

Almost surely, 2^32144403421 is an apocalyptic number.

It is an amenable number.

32144403421 is a deficient number, since it is larger than the sum of its proper divisors (2472646431).

32144403421 is a wasteful number, since it uses less digits than its factorization.

32144403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472646430.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 32144403421 its reverse (12430444123), we get a palindrome (44574847544).

The spelling of 32144403421 in words is "thirty-two billion, one hundred forty-four million, four hundred three thousand, four hundred twenty-one".