9816646827648 has 32 divisors (see below), whose sum is σ = 26075468136960. Its totient is φ = 3272215609088.

The previous prime is 9816646827641. The next prime is 9816646827703. The reversal of 9816646827648 is 8467286466189.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 9816646827648.

It is not an unprimeable number, because it can be changed into a prime (9816646827641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12782091840 + ... + 12782092607.

It is an arithmetic number, because the mean of its divisors is an integer number (814858379280).

Almost surely, 2^{9816646827648} is an apocalyptic number.

It is an amenable number.

9816646827648 is an abundant number, since it is smaller than the sum of its proper divisors (16258821309312).

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

9816646827648 is a wasteful number, since it uses less digits than its factorization.

9816646827648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25564184464 (or 25564184452 counting only the distinct ones).

The product of its digits is 1337720832, while the sum is 75.

The spelling of 9816646827648 in words is "nine trillion, eight hundred sixteen billion, six hundred forty-six million, eight hundred twenty-seven thousand, six hundred forty-eight".