83805442057 has 2 divisors, whose sum is σ = 83805442058. Its totient is φ = 83805442056.

The previous prime is 83805442027. The next prime is 83805442141. The reversal of 83805442057 is 75024450838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51906053241 + 31899388816 = 227829^2 + 178604^2 .

It is a cyclic number.

It is not a de Polignac number, because 83805442057 - 2²³ = 83797053449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83805441998 and 83805442016.

It is not a weakly prime, because it can be changed into another prime (83805442027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41902721028 + 41902721029.

It is an arithmetic number, because the mean of its divisors is an integer number (41902721029).

Almost surely, 2^83805442057 is an apocalyptic number.

It is an amenable number.

83805442057 is a deficient number, since it is larger than the sum of its proper divisors (1).

83805442057 is an equidigital number, since it uses as much as digits as its factorization.

83805442057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1075200, while the sum is 46.

The spelling of 83805442057 in words is "eighty-three billion, eight hundred five million, four hundred forty-two thousand, fifty-seven".