9998321512 has 16 divisors (see below), whose sum is σ = 19733529600. Its totient is φ = 4736046960.

The previous prime is 9998321491. The next prime is 9998321519. The reversal of 9998321512 is 2151238999.

9998321512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9998321512² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9998321519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32889064 + ... + 32889367.

It is an arithmetic number, because the mean of its divisors is an integer number (1233345600).

Almost surely, 2^9998321512 is an apocalyptic number.

It is an amenable number.

9998321512 is a deficient number, since it is larger than the sum of its proper divisors (9735208088).

9998321512 is a wasteful number, since it uses less digits than its factorization.

9998321512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65778456 (or 65778452 counting only the distinct ones).

The product of its digits is 349920, while the sum is 49.

The square root of 9998321512 is about 99991.6072078052. The cubic root of 9998321512 is about 2154.3141435280.

The spelling of 9998321512 in words is "nine billion, nine hundred ninety-eight million, three hundred twenty-one thousand, five hundred twelve".