9985294912 has 28 divisors (see below), whose sum is σ = 19824113260. Its totient is φ = 4990242816.

The previous prime is 9985294883. The next prime is 9985294937. The reversal of 9985294912 is 2194925899.

It can be written as a sum of positive squares in 2 ways, for example, as 1025536576 + 8959758336 = 32024^2 + 94656^2 .

It is a super-2 number, since 2×9985294912² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100264 + ... + 173272.

It is an arithmetic number, because the mean of its divisors is an integer number (708004045).

Almost surely, 2^9985294912 is an apocalyptic number.

It is an amenable number.

9985294912 is a deficient number, since it is larger than the sum of its proper divisors (9838818348).

9985294912 is a wasteful number, since it uses less digits than its factorization.

9985294912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75158 (or 75148 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 58.

The square root of 9985294912 is about 99926.4475101562. The cubic root of 9985294912 is about 2153.3781335804.

The spelling of 9985294912 in words is "nine billion, nine hundred eighty-five million, two hundred ninety-four thousand, nine hundred twelve".