998885970504 has 192 divisors, whose sum is σ = 2878165742400. Its totient is φ = 312068160000.

The previous prime is 998885970493. The next prime is 998885970529. The reversal of 998885970504 is 405079588899.

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

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 47 ways as a sum of consecutive naturals, for example, 262655467 + ... + 262659269.

It is an arithmetic number, because the mean of its divisors is an integer number (14990446575).

Almost surely, 2^998885970504 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 998885970504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439082871200).

998885970504 is an abundant number, since it is smaller than the sum of its proper divisors (1879279771896).

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

998885970504 is a wasteful number, since it uses less digits than its factorization.

998885970504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5836 (or 5829 counting only the distinct ones).

The product of its (nonzero) digits is 261273600, while the sum is 72.

The spelling of 998885970504 in words is "nine hundred ninety-eight billion, eight hundred eighty-five million, nine hundred seventy thousand, five hundred four".