8787768840 has 128 divisors (see below), whose sum is σ = 29315260800. Its totient is φ = 2341589760.

The previous prime is 8787768799. The next prime is 8787768841. The reversal of 8787768840 is 488677878.

It is not an unprimeable number, because it can be changed into a prime (8787768841) 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, 1953634 + ... + 1958126.

It is an arithmetic number, because the mean of its divisors is an integer number (229025475).

Almost surely, 2^8787768840 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 8787768840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14657630400).

8787768840 is an abundant number, since it is smaller than the sum of its proper divisors (20527491960).

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

8787768840 is a wasteful number, since it uses less digits than its factorization.

8787768840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324 (or 6314 counting only the distinct ones).

The product of its (nonzero) digits is 33718272, while the sum is 63.

The square root of 8787768840 is about 93743.1002260966. The cubic root of 8787768840 is about 2063.6032735328.

The spelling of 8787768840 in words is "eight billion, seven hundred eighty-seven million, seven hundred sixty-eight thousand, eight hundred forty".