2005120510847 has 2 divisors, whose sum is σ = 2005120510848. Its totient is φ = 2005120510846.

The previous prime is 2005120510829. The next prime is 2005120510879. The reversal of 2005120510847 is 7480150215002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005120510847 - 2¹⁶ = 2005120445311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005120510747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002560255423 + 1002560255424.

It is an arithmetic number, because the mean of its divisors is an integer number (1002560255424).

Almost surely, 2^{2005120510847} is an apocalyptic number.

2005120510847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005120510847 is an equidigital number, since it uses as much as digits as its factorization.

2005120510847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 35.

Adding to 2005120510847 its reverse (7480150215002), we get a palindrome (9485270725849).

The spelling of 2005120510847 in words is "two trillion, five billion, one hundred twenty million, five hundred ten thousand, eight hundred forty-seven".