85836487634549 has 2 divisors, whose sum is σ = 85836487634550. Its totient is φ = 85836487634548.

The previous prime is 85836487634531. The next prime is 85836487634647. The reversal of 85836487634549 is 94543678463858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84913460522500 + 923027112049 = 9214850^2 + 960743^2 .

It is a cyclic number.

It is not a de Polignac number, because 85836487634549 - 2³² = 85832192667253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85836487634509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42918243817274 + 42918243817275.

It is an arithmetic number, because the mean of its divisors is an integer number (42918243817275).

Almost surely, 2^{85836487634549} is an apocalyptic number.

It is an amenable number.

85836487634549 is a deficient number, since it is larger than the sum of its proper divisors (1).

85836487634549 is an equidigital number, since it uses as much as digits as its factorization.

85836487634549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16721510400, while the sum is 80.

The spelling of 85836487634549 in words is "eighty-five trillion, eight hundred thirty-six billion, four hundred eighty-seven million, six hundred thirty-four thousand, five hundred forty-nine".