8631988992 has 216 divisors, whose sum is σ = 28060563440. Its totient is φ = 2615500800.

The previous prime is 8631988973. The next prime is 8631989011. The reversal of 8631988992 is 2998891368.

It is an interprime number because it is at equal distance from previous prime (8631988973) and next prime (8631989011).

It is a tau number, because it is divible by the number of its divisors (216).

It is a super-2 number, since 2×8631988992² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

Its product of digits (13436928) is a multiple of the sum of its prime factors (10368).

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, 831192 + ... + 841512.

Almost surely, 2^8631988992 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 8631988992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14030281720).

8631988992 is an abundant number, since it is smaller than the sum of its proper divisors (19428574448).

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

8631988992 is a wasteful number, since it uses less digits than its factorization.

8631988992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10368 (or 10337 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 63.

The square root of 8631988992 is about 92908.4979536318. The cubic root of 8631988992 is about 2051.3367440231.

The spelling of 8631988992 in words is "eight billion, six hundred thirty-one million, nine hundred eighty-eight thousand, nine hundred ninety-two".