2005042540441 has 4 divisors (see below), whose sum is σ = 2024894446884. Its totient is φ = 1985190634000.

The previous prime is 2005042540387. The next prime is 2005042540531. The reversal of 2005042540441 is 1440452405002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1626719134041 + 378323406400 = 1275429^2 + 615080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2005042540441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005042541441) 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, 9925953070 + ... + 9925953271.

It is an arithmetic number, because the mean of its divisors is an integer number (506223611721).

Almost surely, 2^{2005042540441} is an apocalyptic number.

It is an amenable number.

2005042540441 is a deficient number, since it is larger than the sum of its proper divisors (19851906443).

2005042540441 is a wasteful number, since it uses less digits than its factorization.

2005042540441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19851906442.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 2005042540441 its reverse (1440452405002), we get a palindrome (3445494945443).

The spelling of 2005042540441 in words is "two trillion, five billion, forty-two million, five hundred forty thousand, four hundred forty-one".