2005233639523 has 4 divisors (see below), whose sum is σ = 2014225718848. Its totient is φ = 1996241560200.

The previous prime is 2005233639491. The next prime is 2005233639583. The reversal of 2005233639523 is 3259363325002.

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 2005233639523 - 2⁵ = 2005233639491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2005233639523.

It is not an unprimeable number, because it can be changed into a prime (2005233639583) 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 in 3 ways as a sum of consecutive naturals, for example, 4496039328 + ... + 4496039773.

It is an arithmetic number, because the mean of its divisors is an integer number (503556429712).

Almost surely, 2^{2005233639523} is an apocalyptic number.

2005233639523 is a deficient number, since it is larger than the sum of its proper divisors (8992079325).

2005233639523 is an equidigital number, since it uses as much as digits as its factorization.

2005233639523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8992079324.

The product of its (nonzero) digits is 874800, while the sum is 43.

The spelling of 2005233639523 in words is "two trillion, five billion, two hundred thirty-three million, six hundred thirty-nine thousand, five hundred twenty-three".