8781660160 has 512 divisors, whose sum is σ = 28185292800. Its totient is φ = 2548039680.

The previous prime is 8781660127. The next prime is 8781660161. The reversal of 8781660160 is 610661878.

It is a tau number, because it is divible by the number of its divisors (512).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8781660161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283279345 + ... + 283279375.

It is an arithmetic number, because the mean of its divisors is an integer number (55049400).

Almost surely, 2^8781660160 is an apocalyptic number.

8781660160 is a gapful number since it is divisible by the number (80) 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 8781660160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14092646400).

8781660160 is an abundant number, since it is smaller than the sum of its proper divisors (19403632640).

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

8781660160 is a wasteful number, since it uses less digits than its factorization.

8781660160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 8781660160 is about 93710.5125372815. The cubic root of 8781660160 is about 2063.1250021865.

The spelling of 8781660160 in words is "eight billion, seven hundred eighty-one million, six hundred sixty thousand, one hundred sixty".