85783533608243 has 2 divisors, whose sum is σ = 85783533608244. Its totient is φ = 85783533608242.

The previous prime is 85783533608209. The next prime is 85783533608293. The reversal of 85783533608243 is 34280633538758.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85783533608243 - 2¹⁸ = 85783533346099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85783533608243.

It is not a weakly prime, because it can be changed into another prime (85783533608203) 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, 42891766804121 + 42891766804122.

It is an arithmetic number, because the mean of its divisors is an integer number (42891766804122).

Almost surely, 2^{85783533608243} is an apocalyptic number.

85783533608243 is a deficient number, since it is larger than the sum of its proper divisors (1).

85783533608243 is an equidigital number, since it uses as much as digits as its factorization.

85783533608243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 348364800, while the sum is 65.

The spelling of 85783533608243 in words is "eighty-five trillion, seven hundred eighty-three billion, five hundred thirty-three million, six hundred eight thousand, two hundred forty-three".