988171965312 has 128 divisors (see below), whose sum is σ = 3005547797760. Its totient is φ = 281794609152.

The previous prime is 988171965289. The next prime is 988171965329. The reversal of 988171965312 is 213569171889.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054368 + ... + 1757280.

It is an arithmetic number, because the mean of its divisors is an integer number (23480842170).

Almost surely, 2^988171965312 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 988171965312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1502773898880).

988171965312 is an abundant number, since it is smaller than the sum of its proper divisors (2017375832448).

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

988171965312 is a wasteful number, since it uses less digits than its factorization.

988171965312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703460 (or 703448 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 60.

The spelling of 988171965312 in words is "nine hundred eighty-eight billion, one hundred seventy-one million, nine hundred sixty-five thousand, three hundred twelve".