6665671940088 has 384 divisors, whose sum is σ = 20512403089920. Its totient is φ = 1767325547520.

The previous prime is 6665671940077. The next prime is 6665671940119. The reversal of 6665671940088 is 8800491765666.

It is a super-2 number, since 2×6665671940088² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2606831706 + ... + 2606834262.

It is an arithmetic number, because the mean of its divisors is an integer number (53417716380).

Almost surely, 2^{6665671940088} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6665671940088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10256201544960).

6665671940088 is an abundant number, since it is smaller than the sum of its proper divisors (13846731149832).

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

6665671940088 is a wasteful number, since it uses less digits than its factorization.

6665671940088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475 (or 3452 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 66.

The spelling of 6665671940088 in words is "six trillion, six hundred sixty-five billion, six hundred seventy-one million, nine hundred forty thousand, eighty-eight".