2001671722003 has 4 divisors (see below), whose sum is σ = 2008191825640. Its totient is φ = 1995151618368.

The previous prime is 2001671721971. The next prime is 2001671722007. The reversal of 2001671722003 is 3002271761002.

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 2001671722003 - 2⁵ = 2001671721971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001671722007) 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, 3260051358 + ... + 3260051971.

It is an arithmetic number, because the mean of its divisors is an integer number (502047956410).

Almost surely, 2^{2001671722003} is an apocalyptic number.

2001671722003 is a deficient number, since it is larger than the sum of its proper divisors (6520103637).

2001671722003 is an equidigital number, since it uses as much as digits as its factorization.

2001671722003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520103636.

The product of its (nonzero) digits is 7056, while the sum is 31.

The spelling of 2001671722003 in words is "two trillion, one billion, six hundred seventy-one million, seven hundred twenty-two thousand, three".