8688770778868 has 6 divisors (see below), whose sum is σ = 15205348863026. Its totient is φ = 4344385389432.

The previous prime is 8688770778841. The next prime is 8688770778911.

8688770778868 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 7035766860004 + 1653003918864 = 2652502^2 + 1285692^2 .

It is a super-3 number, since 3×8688770778868³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086096347355 + ... + 1086096347362.

Almost surely, 2^{8688770778868} is an apocalyptic number.

It is an amenable number.

8688770778868 is a deficient number, since it is larger than the sum of its proper divisors (6516578084158).

8688770778868 is a wasteful number, since it uses less digits than its factorization.

8688770778868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172192694721 (or 2172192694719 counting only the distinct ones).

The product of its (nonzero) digits is 22658678784, while the sum is 88.

The spelling of 8688770778868 in words is "eight trillion, six hundred eighty-eight billion, seven hundred seventy million, seven hundred seventy-eight thousand, eight hundred sixty-eight".