2005042540443 has 4 divisors (see below), whose sum is σ = 2673390053928. Its totient is φ = 1336695026960.

The previous prime is 2005042540387. The next prime is 2005042540531. The reversal of 2005042540443 is 3440452405002.

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 2005042540443 - 2¹⁴ = 2005042524059 is a prime.

It is a super-2 number, since 2×2005042540443² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2005042541443) 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, 334173756738 + ... + 334173756743.

It is an arithmetic number, because the mean of its divisors is an integer number (668347513482).

Almost surely, 2^{2005042540443} is an apocalyptic number.

2005042540443 is a deficient number, since it is larger than the sum of its proper divisors (668347513485).

2005042540443 is an equidigital number, since it uses as much as digits as its factorization.

2005042540443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668347513484.

The product of its (nonzero) digits is 76800, while the sum is 33.

Adding to 2005042540443 its reverse (3440452405002), we get a palindrome (5445494945445).

The spelling of 2005042540443 in words is "two trillion, five billion, forty-two million, five hundred forty thousand, four hundred forty-three".