998917248000 has 704 divisors, whose sum is σ = 3997525708800. Its totient is φ = 216295833600.

The previous prime is 998917247959. The next prime is 998917248011. The reversal of 998917248000 is 842719899.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51062221 + ... + 51081779.

Almost surely, 2^998917248000 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 998917248000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1998762854400).

998917248000 is an abundant number, since it is smaller than the sum of its proper divisors (2998608460800).

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

998917248000 is a wasteful number, since it uses less digits than its factorization.

998917248000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19623 (or 19595 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 57.

The spelling of 998917248000 in words is "nine hundred ninety-eight billion, nine hundred seventeen million, two hundred forty-eight thousand".