7788193666560 has 320 divisors, whose sum is σ = 28556717967360. Its totient is φ = 2009855877120.

The previous prime is 7788193666559. The next prime is 7788193666657. The reversal of 7788193666560 is 656663918877.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325359 + ... + 3960081.

It is an arithmetic number, because the mean of its divisors is an integer number (89239743648).

Almost surely, 2^{7788193666560} 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 7788193666560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14278358983680).

7788193666560 is an abundant number, since it is smaller than the sum of its proper divisors (20768524300800).

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

7788193666560 is a wasteful number, since it uses less digits than its factorization.

7788193666560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634786 (or 3634764 counting only the distinct ones).

The product of its (nonzero) digits is 548674560, while the sum is 72.

The spelling of 7788193666560 in words is "seven trillion, seven hundred eighty-eight billion, one hundred ninety-three million, six hundred sixty-six thousand, five hundred sixty".