9996782747977 has 2 divisors, whose sum is σ = 9996782747978. Its totient is φ = 9996782747976.

The previous prime is 9996782747839. The next prime is 9996782748031. The reversal of 9996782747977 is 7797472876999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9209701493001 + 787081254976 = 3034749^2 + 887176^2 .

It is a cyclic number.

It is not a de Polignac number, because 9996782747977 - 2⁴³ = 1200689725769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9996782747891 and 9996782747900.

It is not a weakly prime, because it can be changed into another prime (9996782747177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998391373988 + 4998391373989.

It is an arithmetic number, because the mean of its divisors is an integer number (4998391373989).

Almost surely, 2^{9996782747977} is an apocalyptic number.

It is an amenable number.

9996782747977 is a deficient number, since it is larger than the sum of its proper divisors (1).

9996782747977 is an equidigital number, since it uses as much as digits as its factorization.

9996782747977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42343959168, while the sum is 91.

The spelling of 9996782747977 in words is "nine trillion, nine hundred ninety-six billion, seven hundred eighty-two million, seven hundred forty-seven thousand, nine hundred seventy-seven".