2001983240805 has 16 divisors (see below), whose sum is σ = 3203212267584. Its totient is φ = 1067711367680.

The previous prime is 2001983240801. The next prime is 2001983240819. The reversal of 2001983240805 is 5080423891002.

It is not a de Polignac number, because 2001983240805 - 2² = 2001983240801 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001983240801) 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, 527482 + ... + 2069348.

It is an arithmetic number, because the mean of its divisors is an integer number (200200766724).

Almost surely, 2^{2001983240805} is an apocalyptic number.

It is an amenable number.

2001983240805 is a deficient number, since it is larger than the sum of its proper divisors (1201229026779).

2001983240805 is a wasteful number, since it uses less digits than its factorization.

2001983240805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628436.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 2001983240805 in words is "two trillion, one billion, nine hundred eighty-three million, two hundred forty thousand, eight hundred five".