6688848488865 has 16 divisors (see below), whose sum is σ = 10929863063808. Its totient is φ = 3491484033536.

The previous prime is 6688848488851. The next prime is 6688848488921. The reversal of 6688848488865 is 5688848488866.

It is a cyclic number.

It is not a de Polignac number, because 6688848488865 - 2⁴ = 6688848488849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4743863472 + ... + 4743864881.

It is an arithmetic number, because the mean of its divisors is an integer number (683116441488).

Almost surely, 2^{6688848488865} is an apocalyptic number.

It is an amenable number.

6688848488865 is a deficient number, since it is larger than the sum of its proper divisors (4241014574943).

6688848488865 is a wasteful number, since it uses less digits than its factorization.

6688848488865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9487728408.

The product of its digits is 36238786560, while the sum is 87.

Subtracting from 6688848488865 its reverse (5688848488866), we obtain a palindrome (999999999999).

The spelling of 6688848488865 in words is "six trillion, six hundred eighty-eight billion, eight hundred forty-eight million, four hundred eighty-eight thousand, eight hundred sixty-five".