2008997990999 has 4 divisors (see below), whose sum is σ = 2019516305280. Its totient is φ = 1998479676720.

The previous prime is 2008997990981. The next prime is 2008997991101. The reversal of 2008997990999 is 9990997998002.

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 2008997990999 - 2⁴⁰ = 909486363223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2008997990929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5259156854 + ... + 5259157235.

It is an arithmetic number, because the mean of its divisors is an integer number (504879076320).

Almost surely, 2^{2008997990999} is an apocalyptic number.

2008997990999 is a deficient number, since it is larger than the sum of its proper divisors (10518314281).

2008997990999 is a wasteful number, since it uses less digits than its factorization.

2008997990999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10518314280.

The product of its (nonzero) digits is 535692528, while the sum is 80.

The spelling of 2008997990999 in words is "two trillion, eight billion, nine hundred ninety-seven million, nine hundred ninety thousand, nine hundred ninety-nine".