2005553123003 has 16 divisors (see below), whose sum is σ = 2022977510400. Its totient is φ = 1988207337600.

The previous prime is 2005553122999. The next prime is 2005553123011. The reversal of 2005553123003 is 3003213555002.

It is a cyclic number.

It is not a de Polignac number, because 2005553123003 - 2² = 2005553122999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005553123083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221824163 + ... + 221833203.

It is an arithmetic number, because the mean of its divisors is an integer number (126436094400).

Almost surely, 2^{2005553123003} is an apocalyptic number.

2005553123003 is a deficient number, since it is larger than the sum of its proper divisors (17424387397).

2005553123003 is a wasteful number, since it uses less digits than its factorization.

2005553123003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13178.

The product of its (nonzero) digits is 13500, while the sum is 29.

Adding to 2005553123003 its reverse (3003213555002), we get a palindrome (5008766678005).

The spelling of 2005553123003 in words is "two trillion, five billion, five hundred fifty-three million, one hundred twenty-three thousand, three".