86539009806349 has 2 divisors, whose sum is σ = 86539009806350. Its totient is φ = 86539009806348.

The previous prime is 86539009806329. The next prime is 86539009806391. The reversal of 86539009806349 is 94360890093568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46274781738249 + 40264228068100 = 6802557^2 + 6345410^2 .

It is a cyclic number.

It is not a de Polignac number, because 86539009806349 - 2¹⁵ = 86539009773581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86539009806329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43269504903174 + 43269504903175.

It is an arithmetic number, because the mean of its divisors is an integer number (43269504903175).

Almost surely, 2^{86539009806349} is an apocalyptic number.

It is an amenable number.

86539009806349 is a deficient number, since it is larger than the sum of its proper divisors (1).

86539009806349 is an equidigital number, since it uses as much as digits as its factorization.

86539009806349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302330880, while the sum is 70.

The spelling of 86539009806349 in words is "eighty-six trillion, five hundred thirty-nine billion, nine million, eight hundred six thousand, three hundred forty-nine".