989318054400 has 480 divisors, whose sum is σ = 3556004567808. Its totient is φ = 241002086400.

The previous prime is 989318054399. The next prime is 989318054449. The reversal of 989318054400 is 4450813989.

It is a tau number, because it is divible by the number of its divisors (480).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48412185 + ... + 48432615.

Almost surely, 2^989318054400 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 989318054400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1778002283904).

989318054400 is an abundant number, since it is smaller than the sum of its proper divisors (2566686513408).

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

989318054400 is a wasteful number, since it uses less digits than its factorization.

989318054400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20572 (or 20551 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 989318054400 in words is "nine hundred eighty-nine billion, three hundred eighteen million, fifty-four thousand, four hundred".