6686620659096 has 512 divisors, whose sum is σ = 21355315200000. Its totient is φ = 1738387284480.

The previous prime is 6686620659091. The next prime is 6686620659107. The reversal of 6686620659096 is 6909560266866.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 6686620659096.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6686620659091) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 346285890 + ... + 346305198.

It is an arithmetic number, because the mean of its divisors is an integer number (41709600000).

Almost surely, 2^{6686620659096} 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 6686620659096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10677657600000).

6686620659096 is an abundant number, since it is smaller than the sum of its proper divisors (14668694540904).

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

6686620659096 is a wasteful number, since it uses less digits than its factorization.

6686620659096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19452 (or 19434 counting only the distinct ones).

The product of its (nonzero) digits is 302330880, while the sum is 69.

The spelling of 6686620659096 in words is "six trillion, six hundred eighty-six billion, six hundred twenty million, six hundred fifty-nine thousand, ninety-six".