2043400223443 has 4 divisors (see below), whose sum is σ = 2043406723608. Its totient is φ = 2043393723280.

The previous prime is 2043400223411. The next prime is 2043400223489. The reversal of 2043400223443 is 3443220043402.

It is a happy number.

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 2043400223443 - 2⁵ = 2043400223411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043400293443) 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 3 ways as a sum of consecutive naturals, for example, 2753221 + ... + 3415702.

It is an arithmetic number, because the mean of its divisors is an integer number (510851680902).

Almost surely, 2^{2043400223443} is an apocalyptic number.

2043400223443 is a deficient number, since it is larger than the sum of its proper divisors (6500165).

2043400223443 is an equidigital number, since it uses as much as digits as its factorization.

2043400223443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6500164.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 2043400223443 its reverse (3443220043402), we get a palindrome (5486620266845).

The spelling of 2043400223443 in words is "two trillion, forty-three billion, four hundred million, two hundred twenty-three thousand, four hundred forty-three".