9769616686728 has 144 divisors (see below), whose sum is σ = 28060246356480. Its totient is φ = 3187250029152.

The previous prime is 9769616686679. The next prime is 9769616686757. The reversal of 9769616686728 is 8276866169679.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 486825 + ... + 4447047.

It is an arithmetic number, because the mean of its divisors is an integer number (194862821920).

Almost surely, 2^{9769616686728} 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 9769616686728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14030123178240).

9769616686728 is an abundant number, since it is smaller than the sum of its proper divisors (18290629669752).

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

9769616686728 is an equidigital number, since it uses as much as digits as its factorization.

9769616686728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960300 (or 3960275 counting only the distinct ones).

The product of its digits is 3950456832, while the sum is 81.

The spelling of 9769616686728 in words is "nine trillion, seven hundred sixty-nine billion, six hundred sixteen million, six hundred eighty-six thousand, seven hundred twenty-eight".