21443032410243 has 4 divisors (see below), whose sum is σ = 28590709880328. Its totient is φ = 14295354940160.

The previous prime is 21443032410223. The next prime is 21443032410253. The reversal of 21443032410243 is 34201423034412.

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

It is a cyclic number.

It is not a de Polignac number, because 21443032410243 - 2⁸ = 21443032409987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21443032410223) 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, 3573838735038 + ... + 3573838735043.

It is an arithmetic number, because the mean of its divisors is an integer number (7147677470082).

Almost surely, 2^{21443032410243} is an apocalyptic number.

21443032410243 is a deficient number, since it is larger than the sum of its proper divisors (7147677470085).

21443032410243 is an equidigital number, since it uses as much as digits as its factorization.

21443032410243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7147677470084.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 21443032410243 its reverse (34201423034412), we get a palindrome (55644455444655).

The spelling of 21443032410243 in words is "twenty-one trillion, four hundred forty-three billion, thirty-two million, four hundred ten thousand, two hundred forty-three".