988398475776 has 240 divisors, whose sum is σ = 2887533352704. Its totient is φ = 325443059712.

The previous prime is 988398475747. The next prime is 988398475811. The reversal of 988398475776 is 677574893889.

988398475776 is a `hidden beast` number, since 9 + 8 + 8 + 39 + 8 + 4 + 7 + 577 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 988398475695 and 988398475704.

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, 271312611 + ... + 271316253.

Almost surely, 2^988398475776 is an apocalyptic number.

988398475776 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 988398475776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443766676352).

988398475776 is an abundant number, since it is smaller than the sum of its proper divisors (1899134876928).

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

988398475776 is a wasteful number, since it uses less digits than its factorization.

988398475776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371 (or 4352 counting only the distinct ones).

The product of its digits is 5120962560, while the sum is 81.

The spelling of 988398475776 in words is "nine hundred eighty-eight billion, three hundred ninety-eight million, four hundred seventy-five thousand, seven hundred seventy-six".