85865508221183 has 2 divisors, whose sum is σ = 85865508221184. Its totient is φ = 85865508221182.

The previous prime is 85865508221173. The next prime is 85865508221209. The reversal of 85865508221183 is 38112280556858.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85865508221183 - 2¹⁰ = 85865508220159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85865508221173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42932754110591 + 42932754110592.

It is an arithmetic number, because the mean of its divisors is an integer number (42932754110592).

Almost surely, 2^{85865508221183} is an apocalyptic number.

85865508221183 is a deficient number, since it is larger than the sum of its proper divisors (1).

85865508221183 is an equidigital number, since it uses as much as digits as its factorization.

85865508221183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864000, while the sum is 62.

The spelling of 85865508221183 in words is "eighty-five trillion, eight hundred sixty-five billion, five hundred eight million, two hundred twenty-one thousand, one hundred eighty-three".