998031323016 has 384 divisors, whose sum is σ = 3419593632000. Its totient is φ = 261284244480.

The previous prime is 998031322999. The next prime is 998031323033. The reversal of 998031323016 is 610323130899.

998031323016 is a `hidden beast` number, since 9 + 98 + 0 + 313 + 230 + 16 = 666.

It is an interprime number because it is at equal distance from previous prime (998031322999) and next prime (998031323033).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 43972231 + ... + 43994921.

It is an arithmetic number, because the mean of its divisors is an integer number (8905191750).

Almost surely, 2^998031323016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998031323016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1709796816000).

998031323016 is an abundant number, since it is smaller than the sum of its proper divisors (2421562308984).

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

998031323016 is a wasteful number, since it uses less digits than its factorization.

998031323016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22874 (or 22853 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 998031323016 in words is "nine hundred ninety-eight billion, thirty-one million, three hundred twenty-three thousand, sixteen".