6888686868885 has 32 divisors (see below), whose sum is σ = 11058295615488. Its totient is φ = 3661847354880.

The previous prime is 6888686868883. The next prime is 6888686868911. The reversal of 6888686868885 is 5888686868886.

It is not a de Polignac number, because 6888686868885 - 2¹ = 6888686868883 is a prime.

It is a super-2 number, since 2×6888686868885² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6888686868883) 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, 7934865 + ... + 8760105.

It is an arithmetic number, because the mean of its divisors is an integer number (345571737984).

Almost surely, 2^{6888686868885} is an apocalyptic number.

It is an amenable number.

6888686868885 is a deficient number, since it is larger than the sum of its proper divisors (4169608746603).

6888686868885 is a wasteful number, since it uses less digits than its factorization.

6888686868885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827085.

The product of its digits is 108716359680, while the sum is 93.

Subtracting from 6888686868885 its reverse (5888686868886), we obtain a palindrome (999999999999).

The spelling of 6888686868885 in words is "six trillion, eight hundred eighty-eight billion, six hundred eighty-six million, eight hundred sixty-eight thousand, eight hundred eighty-five".