8781918008688 has 200 divisors, whose sum is σ = 27753281462016. Its totient is φ = 2658769833600.

The previous prime is 8781918008671. The next prime is 8781918008693. The reversal of 8781918008688 is 8868008191878.

It is a super-2 number, since 2×8781918008688² (a number of 27 digits) contains 22 as substring.

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 39 ways as a sum of consecutive naturals, for example, 15445123 + ... + 16003613.

Almost surely, 2^{8781918008688} is an apocalyptic number.

8781918008688 is a gapful number since it is divisible by the number (88) 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 8781918008688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13876640731008).

8781918008688 is an abundant number, since it is smaller than the sum of its proper divisors (18971363453328).

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

8781918008688 is a wasteful number, since it uses less digits than its factorization.

8781918008688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559625 (or 559610 counting only the distinct ones).

The product of its (nonzero) digits is 99090432, while the sum is 72.

The spelling of 8781918008688 in words is "eight trillion, seven hundred eighty-one billion, nine hundred eighteen million, eight thousand, six hundred eighty-eight".