9566396890776 has 192 divisors, whose sum is σ = 28471773002400. Its totient is φ = 2877692313600.

The previous prime is 9566396890723. The next prime is 9566396890801. The reversal of 9566396890776 is 6770986936659.

9566396890776 is a `hidden beast` number, since 95 + 66 + 396 + 89 + 0 + 7 + 7 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 9566396890695 and 9566396890704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79787160 + ... + 79906968.

Almost surely, 2^{9566396890776} 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 9566396890776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14235886501200).

9566396890776 is an abundant number, since it is smaller than the sum of its proper divisors (18905376111624).

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

9566396890776 is a wasteful number, since it uses less digits than its factorization.

9566396890776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120570 (or 120563 counting only the distinct ones).

The product of its (nonzero) digits is 5555329920, while the sum is 81.

The spelling of 9566396890776 in words is "nine trillion, five hundred sixty-six billion, three hundred ninety-six million, eight hundred ninety thousand, seven hundred seventy-six".