21432432413 has 8 divisors (see below), whose sum is σ = 24495205632. Its totient is φ = 18369908496.

The previous prime is 21432432341. The next prime is 21432432431. The reversal of 21432432413 is 31423423412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21432432413 - 2²⁰ = 21431383837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21432432113) 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 7 ways as a sum of consecutive naturals, for example, 190031 + ... + 281027.

It is an arithmetic number, because the mean of its divisors is an integer number (3061900704).

Almost surely, 2^21432432413 is an apocalyptic number.

It is an amenable number.

21432432413 is a deficient number, since it is larger than the sum of its proper divisors (3062773219).

21432432413 is an equidigital number, since it uses as much as digits as its factorization.

21432432413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124651.

The product of its digits is 13824, while the sum is 29.

Adding to 21432432413 its reverse (31423423412), we get a palindrome (52855855825).

Subtracting 21432432413 from its reverse (31423423412), we obtain a palindrome (9990990999).

The spelling of 21432432413 in words is "twenty-one billion, four hundred thirty-two million, four hundred thirty-two thousand, four hundred thirteen".