6889566659886 has 96 divisors (see below), whose sum is σ = 15690719135520. Its totient is φ = 2181906720000.

The previous prime is 6889566659851. The next prime is 6889566659947.

6889566659886 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6889566659886² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6889566659796 and 6889566659805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8192836 + ... + 8994536.

It is an arithmetic number, because the mean of its divisors is an integer number (163444990995).

Almost surely, 2^{6889566659886} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6889566659886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7845359567760).

6889566659886 is an abundant number, since it is smaller than the sum of its proper divisors (8801152475634).

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

6889566659886 is a wasteful number, since it uses less digits than its factorization.

6889566659886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802002 (or 801999 counting only the distinct ones).

The product of its digits is 64497254400, while the sum is 90.

The spelling of 6889566659886 in words is "six trillion, eight hundred eighty-nine billion, five hundred sixty-six million, six hundred fifty-nine thousand, eight hundred eighty-six".