998945837604 has 324 divisors, whose sum is σ = 3163690311600. Its totient is φ = 264715102080.

The previous prime is 998945837489. The next prime is 998945837647. The reversal of 998945837604 is 406738549899.

998945837604 is a `hidden beast` number, since 9 + 9 + 8 + 9 + 4 + 5 + 8 + 3 + 7 + 604 = 666.

998945837604 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 13951407 + ... + 14022825.

Almost surely, 2^998945837604 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 998945837604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1581845155800).

998945837604 is an abundant number, since it is smaller than the sum of its proper divisors (2164744473996).

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

998945837604 is a wasteful number, since it uses less digits than its factorization.

998945837604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71496 (or 71467 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 72.

The spelling of 998945837604 in words is "nine hundred ninety-eight billion, nine hundred forty-five million, eight hundred thirty-seven thousand, six hundred four".