843976980911 has 2 divisors, whose sum is σ = 843976980912. Its totient is φ = 843976980910.

The previous prime is 843976980893. The next prime is 843976980923. The reversal of 843976980911 is 119089679348.

843976980911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-843976980911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (843976980961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421988490455 + 421988490456.

It is an arithmetic number, because the mean of its divisors is an integer number (421988490456).

Almost surely, 2^843976980911 is an apocalyptic number.

843976980911 is a deficient number, since it is larger than the sum of its proper divisors (1).

843976980911 is an equidigital number, since it uses as much as digits as its factorization.

843976980911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 65.

The spelling of 843976980911 in words is "eight hundred forty-three billion, nine hundred seventy-six million, nine hundred eighty thousand, nine hundred eleven".