9985424774928 has 40 divisors (see below), whose sum is σ = 25819411880448. Its totient is φ = 3325412833152.

The previous prime is 9985424774909. The next prime is 9985424774933. The reversal of 9985424774928 is 8294774245899.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 95637651 + ... + 95742002.

Almost surely, 2^{9985424774928} is an apocalyptic number.

It is an amenable number.

9985424774928 is an abundant number, since it is smaller than the sum of its proper divisors (15833987105520).

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

9985424774928 is a wasteful number, since it uses less digits than its factorization.

9985424774928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191380751 (or 191380745 counting only the distinct ones).

The product of its digits is 2926264320, while the sum is 78.

The spelling of 9985424774928 in words is "nine trillion, nine hundred eighty-five billion, four hundred twenty-four million, seven hundred seventy-four thousand, nine hundred twenty-eight".