9999839205016 has 16 divisors (see below), whose sum is σ = 18805335602040. Its totient is φ = 4985083044480.

The previous prime is 9999839204981. The next prime is 9999839205017. The reversal of 9999839205016 is 6105029389999.

It is a super-4 number, since 4×9999839205016⁴ (a number of 53 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999839205017) 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, 1854566890 + ... + 1854572281.

Almost surely, 2^{9999839205016} is an apocalyptic number.

It is an amenable number.

9999839205016 is a deficient number, since it is larger than the sum of its proper divisors (8805496397024).

9999839205016 is a wasteful number, since it uses less digits than its factorization.

9999839205016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3709139514 (or 3709139510 counting only the distinct ones).

The product of its (nonzero) digits is 85030560, while the sum is 70.

The spelling of 9999839205016 in words is "nine trillion, nine hundred ninety-nine billion, eight hundred thirty-nine million, two hundred five thousand, sixteen".