2009999870982 has 20 divisors (see below), whose sum is σ = 4503888600156. Its totient is φ = 669999956940.

The previous prime is 2009999870981. The next prime is 2009999870987. The reversal of 2009999870982 is 2890789999002.

It is a self number, because there is not a number n which added to its sum of digits gives 2009999870982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009999870981) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6203703144 + ... + 6203703467.

Almost surely, 2^{2009999870982} is an apocalyptic number.

2009999870982 is an abundant number, since it is smaller than the sum of its proper divisors (2493888729174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2009999870982 is a wasteful number, since it uses less digits than its factorization.

2009999870982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12407406625 (or 12407406616 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 72.

The spelling of 2009999870982 in words is "two trillion, nine billion, nine hundred ninety-nine million, eight hundred seventy thousand, nine hundred eighty-two".