998288773056 has 168 divisors, whose sum is σ = 2901932559344. Its totient is φ = 328055132160.

The previous prime is 998288773039. The next prime is 998288773093. The reversal of 998288773056 is 650377882899.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128957346 + ... + 128965086.

Almost surely, 2^998288773056 is an apocalyptic number.

998288773056 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998288773056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1450966279672).

998288773056 is an abundant number, since it is smaller than the sum of its proper divisors (1903643786288).

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

998288773056 is a wasteful number, since it uses less digits than its factorization.

998288773056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10899 (or 10886 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 72.

The spelling of 998288773056 in words is "nine hundred ninety-eight billion, two hundred eighty-eight million, seven hundred seventy-three thousand, fifty-six".