86224778317 has 2 divisors, whose sum is σ = 86224778318. Its totient is φ = 86224778316.

The previous prime is 86224778273. The next prime is 86224778327. The reversal of 86224778317 is 71387742268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79866151236 + 6358627081 = 282606^2 + 79741^2 .

It is a cyclic number.

It is not a de Polignac number, because 86224778317 - 2¹⁵ = 86224745549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86224778327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43112389158 + 43112389159.

It is an arithmetic number, because the mean of its divisors is an integer number (43112389159).

Almost surely, 2^86224778317 is an apocalyptic number.

It is an amenable number.

86224778317 is a deficient number, since it is larger than the sum of its proper divisors (1).

86224778317 is an equidigital number, since it uses as much as digits as its factorization.

86224778317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6322176, while the sum is 55.

The spelling of 86224778317 in words is "eighty-six billion, two hundred twenty-four million, seven hundred seventy-eight thousand, three hundred seventeen".