9899980913744 has 40 divisors (see below), whose sum is σ = 19817816816640. Its totient is φ = 4785993590400.

The previous prime is 9899980913737. The next prime is 9899980913783. The reversal of 9899980913744 is 4473190899989.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8448872 + ... + 9548999.

It is an arithmetic number, because the mean of its divisors is an integer number (495445420416).

Almost surely, 2^{9899980913744} is an apocalyptic number.

It is an amenable number.

9899980913744 is an abundant number, since it is smaller than the sum of its proper divisors (9917835902896).

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

9899980913744 is a wasteful number, since it uses less digits than its factorization.

9899980913744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17999019 (or 17999013 counting only the distinct ones).

The product of its (nonzero) digits is 1269789696, while the sum is 80.

The spelling of 9899980913744 in words is "nine trillion, eight hundred ninety-nine billion, nine hundred eighty million, nine hundred thirteen thousand, seven hundred forty-four".