85805326738349 has 2 divisors, whose sum is σ = 85805326738350. Its totient is φ = 85805326738348.

The previous prime is 85805326738279. The next prime is 85805326738457. The reversal of 85805326738349 is 94383762350858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85774826560900 + 30500177449 = 9261470^2 + 174643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85805326738349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85805326731349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42902663369174 + 42902663369175.

It is an arithmetic number, because the mean of its divisors is an integer number (42902663369175).

Almost surely, 2^{85805326738349} is an apocalyptic number.

It is an amenable number.

85805326738349 is a deficient number, since it is larger than the sum of its proper divisors (1).

85805326738349 is an equidigital number, since it uses as much as digits as its factorization.

85805326738349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1045094400, while the sum is 71.

The spelling of 85805326738349 in words is "eighty-five trillion, eight hundred five billion, three hundred twenty-six million, seven hundred thirty-eight thousand, three hundred forty-nine".