843696381089 has 2 divisors, whose sum is σ = 843696381090. Its totient is φ = 843696381088.

The previous prime is 843696381071. The next prime is 843696381097. The reversal of 843696381089 is 980183696348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 720814584064 + 122881797025 = 849008^2 + 350545^2 .

It is a cyclic number.

It is not a de Polignac number, because 843696381089 - 2²⁴ = 843679603873 is a prime.

It is not a weakly prime, because it can be changed into another prime (843696381029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421848190544 + 421848190545.

It is an arithmetic number, because the mean of its divisors is an integer number (421848190545).

Almost surely, 2^843696381089 is an apocalyptic number.

It is an amenable number.

843696381089 is a deficient number, since it is larger than the sum of its proper divisors (1).

843696381089 is an equidigital number, since it uses as much as digits as its factorization.

843696381089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53747712, while the sum is 65.

The spelling of 843696381089 in words is "eight hundred forty-three billion, six hundred ninety-six million, three hundred eighty-one thousand, eighty-nine".