998296890624 has 288 divisors, whose sum is σ = 3324411310080. Its totient is φ = 292754995200.

The previous prime is 998296890611. The next prime is 998296890649. The reversal of 998296890624 is 426098692899.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2145219 + ... + 2568765.

Almost surely, 2^998296890624 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 998296890624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1662205655040).

998296890624 is an abundant number, since it is smaller than the sum of its proper divisors (2326114419456).

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

998296890624 is a wasteful number, since it uses less digits than its factorization.

998296890624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423614 (or 423594 counting only the distinct ones).

The product of its (nonzero) digits is 241864704, while the sum is 72.

The spelling of 998296890624 in words is "nine hundred ninety-eight billion, two hundred ninety-six million, eight hundred ninety thousand, six hundred twenty-four".