21432015110445 has 64 divisors (see below), whose sum is σ = 34621190553600. Its totient is φ = 11320940936448.

The previous prime is 21432015110393. The next prime is 21432015110447. The reversal of 21432015110445 is 54401151023412.

It is not a de Polignac number, because 21432015110445 - 2⁸ = 21432015110189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21432015110447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1134019606 + ... + 1134038504.

It is an arithmetic number, because the mean of its divisors is an integer number (540956102400).

Almost surely, 2^{21432015110445} is an apocalyptic number.

It is an amenable number.

21432015110445 is a deficient number, since it is larger than the sum of its proper divisors (13189175443155).

21432015110445 is a wasteful number, since it uses less digits than its factorization.

21432015110445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20594.

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 21432015110445 its reverse (54401151023412), we get a palindrome (75833166133857).

The spelling of 21432015110445 in words is "twenty-one trillion, four hundred thirty-two billion, fifteen million, one hundred ten thousand, four hundred forty-five".