998301806784 has 168 divisors, whose sum is σ = 3036443650240. Its totient is φ = 325028277504.

The previous prime is 998301806771. The next prime is 998301806797. The reversal of 998301806784 is 487608103899.

It is an interprime number because it is at equal distance from previous prime (998301806771) and next prime (998301806797).

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 23 ways as a sum of consecutive naturals, for example, 77674 + ... + 1415145.

Almost surely, 2^998301806784 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 998301806784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1518221825120).

998301806784 is an abundant number, since it is smaller than the sum of its proper divisors (2038141843456).

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

998301806784 is a wasteful number, since it uses less digits than its factorization.

998301806784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492889 (or 1492867 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 998301806784 in words is "nine hundred ninety-eight billion, three hundred one million, eight hundred six thousand, seven hundred eighty-four".