21044013133443 has 8 divisors (see below), whose sum is σ = 28143453617856. Its totient is φ = 13986957369000.

The previous prime is 21044013133427. The next prime is 21044013133469. The reversal of 21044013133443 is 34433131044012.

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

It is not a de Polignac number, because 21044013133443 - 2⁴ = 21044013133427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21044013137443) 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, 10596178833 + ... + 10596180818.

It is an arithmetic number, because the mean of its divisors is an integer number (3517931702232).

Almost surely, 2^{21044013133443} is an apocalyptic number.

21044013133443 is a deficient number, since it is larger than the sum of its proper divisors (7099440484413).

21044013133443 is a wasteful number, since it uses less digits than its factorization.

21044013133443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21192359985.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 21044013133443 its reverse (34433131044012), we get a palindrome (55477144177455).

The spelling of 21044013133443 in words is "twenty-one trillion, forty-four billion, thirteen million, one hundred thirty-three thousand, four hundred forty-three".