86782815293 has 2 divisors, whose sum is σ = 86782815294. Its totient is φ = 86782815292.

The previous prime is 86782815289. The next prime is 86782815299. The reversal of 86782815293 is 39251828768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73130762329 + 13652052964 = 270427^2 + 116842^2 .

It is a cyclic number.

It is not a de Polignac number, because 86782815293 - 2² = 86782815289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86782815299) 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, 43391407646 + 43391407647.

It is an arithmetic number, because the mean of its divisors is an integer number (43391407647).

Almost surely, 2^86782815293 is an apocalyptic number.

It is an amenable number.

86782815293 is a deficient number, since it is larger than the sum of its proper divisors (1).

86782815293 is an equidigital number, since it uses as much as digits as its factorization.

86782815293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11612160, while the sum is 59.

The spelling of 86782815293 in words is "eighty-six billion, seven hundred eighty-two million, eight hundred fifteen thousand, two hundred ninety-three".