2005042540547 has 2 divisors, whose sum is σ = 2005042540548. Its totient is φ = 2005042540546.

The previous prime is 2005042540531. The next prime is 2005042540577. The reversal of 2005042540547 is 7450452405002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005042540547 - 2⁴ = 2005042540531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2005042540547.

It is not a weakly prime, because it can be changed into another prime (2005042540577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002521270273 + 1002521270274.

It is an arithmetic number, because the mean of its divisors is an integer number (1002521270274).

Almost surely, 2^{2005042540547} is an apocalyptic number.

2005042540547 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005042540547 is an equidigital number, since it uses as much as digits as its factorization.

2005042540547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224000, while the sum is 38.

Adding to 2005042540547 its reverse (7450452405002), we get a palindrome (9455494945549).

The spelling of 2005042540547 in words is "two trillion, five billion, forty-two million, five hundred forty thousand, five hundred forty-seven".