83444220416779 has 2 divisors, whose sum is σ = 83444220416780. Its totient is φ = 83444220416778.

The previous prime is 83444220416749. The next prime is 83444220416831. The reversal of 83444220416779 is 97761402244438.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83444220416779 - 2⁹ = 83444220416267 is a prime.

It is not a weakly prime, because it can be changed into another prime (83444220416719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41722110208389 + 41722110208390.

It is an arithmetic number, because the mean of its divisors is an integer number (41722110208390).

Almost surely, 2^{83444220416779} is an apocalyptic number.

83444220416779 is a deficient number, since it is larger than the sum of its proper divisors (1).

83444220416779 is an equidigital number, since it uses as much as digits as its factorization.

83444220416779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65028096, while the sum is 61.

The spelling of 83444220416779 in words is "eighty-three trillion, four hundred forty-four billion, two hundred twenty million, four hundred sixteen thousand, seven hundred seventy-nine".