21404232343203 has 8 divisors (see below), whose sum is σ = 28545431796816. Its totient is φ = 14266260559200.

The previous prime is 21404232343157. The next prime is 21404232343223. The reversal of 21404232343203 is 30234323240412.

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

It is not a de Polignac number, because 21404232343203 - 2⁶ = 21404232343139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21404232343223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806901928 + ... + 806928453.

It is an arithmetic number, because the mean of its divisors is an integer number (3568178974602).

Almost surely, 2^{21404232343203} is an apocalyptic number.

21404232343203 is a deficient number, since it is larger than the sum of its proper divisors (7141199453613).

21404232343203 is a wasteful number, since it uses less digits than its factorization.

21404232343203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613834805.

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 21404232343203 its reverse (30234323240412), we get a palindrome (51638555583615).

The spelling of 21404232343203 in words is "twenty-one trillion, four hundred four billion, two hundred thirty-two million, three hundred forty-three thousand, two hundred three".