9998985484722 has 64 divisors (see below), whose sum is σ = 22231696306176. Its totient is φ = 2977271484480.

The previous prime is 9998985484711. The next prime is 9998985484729. The reversal of 9998985484722 is 2274845898999.

It is not an unprimeable number, because it can be changed into a prime (9998985484729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131314953 + ... + 131391075.

It is an arithmetic number, because the mean of its divisors is an integer number (347370254784).

Almost surely, 2^{9998985484722} is an apocalyptic number.

9998985484722 is an abundant number, since it is smaller than the sum of its proper divisors (12232710821454).

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

9998985484722 is a wasteful number, since it uses less digits than its factorization.

9998985484722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130495.

The product of its digits is 7524679680, while the sum is 84.

The spelling of 9998985484722 in words is "nine trillion, nine hundred ninety-eight billion, nine hundred eighty-five million, four hundred eighty-four thousand, seven hundred twenty-two".