7648788878568 has 40 divisors (see below), whose sum is σ = 21423691073730. Its totient is φ = 2549596292640.

The previous prime is 7648788878567. The next prime is 7648788878579. The reversal of 7648788878568 is 8658788878467.

It is a happy number.

7648788878568 is a `hidden beast` number, since 7 + 6 + 487 + 8 + 8 + 8 + 78 + 56 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6015550886244 + 1633237992324 = 2452662^2 + 1277982^2 .

It is not an unprimeable number, because it can be changed into a prime (7648788878567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5901842623 + ... + 5901843918.

Almost surely, 2^{7648788878568} is an apocalyptic number.

It is an amenable number.

7648788878568 is an abundant number, since it is smaller than the sum of its proper divisors (13774902195162).

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

7648788878568 is a wasteful number, since it uses less digits than its factorization.

7648788878568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11803686559 (or 11803686546 counting only the distinct ones).

The product of its digits is 64739082240, while the sum is 90.

The spelling of 7648788878568 in words is "seven trillion, six hundred forty-eight billion, seven hundred eighty-eight million, eight hundred seventy-eight thousand, five hundred sixty-eight".