9963776805 has 48 divisors (see below), whose sum is σ = 16923305472. Its totient is φ = 4997030400.

The previous prime is 9963776737. The next prime is 9963776813. The reversal of 9963776805 is 5086773699.

It is not a de Polignac number, because 9963776805 - 2¹⁴ = 9963760421 is a prime.

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, 13092625 + ... + 13093385.

It is an arithmetic number, because the mean of its divisors is an integer number (352568864).

Almost surely, 2^9963776805 is an apocalyptic number.

It is an amenable number.

9963776805 is a deficient number, since it is larger than the sum of its proper divisors (6959528667).

9963776805 is an equidigital number, since it uses as much as digits as its factorization.

9963776805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 60.

The square root of 9963776805 is about 99818.7197122864. The cubic root of 9963776805 is about 2151.8301924587.

The spelling of 9963776805 in words is "nine billion, nine hundred sixty-three million, seven hundred seventy-six thousand, eight hundred five".