9999939826992 has 20 divisors (see below), whose sum is σ = 25833177886520. Its totient is φ = 3333313275648.

The previous prime is 9999939826991. The next prime is 9999939827041. The reversal of 9999939826992 is 2996289399999.

It is a junction number, because it is equal to n+sod(n) for n = 9999939826896 and 9999939826905.

It is not an unprimeable number, because it can be changed into a prime (9999939826991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104166039817 + ... + 104166039912.

It is an arithmetic number, because the mean of its divisors is an integer number (1291658894326).

Almost surely, 2^{9999939826992} is an apocalyptic number.

It is an amenable number.

9999939826992 is an abundant number, since it is smaller than the sum of its proper divisors (15833238059528).

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

9999939826992 is a wasteful number, since it uses less digits than its factorization.

9999939826992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208332079740 (or 208332079734 counting only the distinct ones).

The product of its digits is 24794911296, while the sum is 93.

The spelling of 9999939826992 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred thirty-nine million, eight hundred twenty-six thousand, nine hundred ninety-two".