2001353444003 has 4 divisors (see below), whose sum is σ = 2001375900720. Its totient is φ = 2001330987288.

The previous prime is 2001353443997. The next prime is 2001353444023. The reversal of 2001353444003 is 3004443531002.

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 2001353444003 - 2²⁸ = 2001085008547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001353444023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11094143 + ... + 11273096.

It is an arithmetic number, because the mean of its divisors is an integer number (500343975180).

Almost surely, 2^{2001353444003} is an apocalyptic number.

2001353444003 is a deficient number, since it is larger than the sum of its proper divisors (22456717).

2001353444003 is an equidigital number, since it uses as much as digits as its factorization.

2001353444003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22456716.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 2001353444003 its reverse (3004443531002), we get a palindrome (5005796975005).

The spelling of 2001353444003 in words is "two trillion, one billion, three hundred fifty-three million, four hundred forty-four thousand, three".