285868538017 has 2 divisors, whose sum is σ = 285868538018. Its totient is φ = 285868538016.

The previous prime is 285868538003. The next prime is 285868538029. The reversal of 285868538017 is 710835868582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277255955601 + 8612582416 = 526551^2 + 92804^2 .

It is a cyclic number.

It is not a de Polignac number, because 285868538017 - 2¹⁵ = 285868505249 is a prime.

It is not a weakly prime, because it can be changed into another prime (285868538057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142934269008 + 142934269009.

It is an arithmetic number, because the mean of its divisors is an integer number (142934269009).

Almost surely, 2^285868538017 is an apocalyptic number.

It is an amenable number.

285868538017 is a deficient number, since it is larger than the sum of its proper divisors (1).

285868538017 is an equidigital number, since it uses as much as digits as its factorization.

285868538017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25804800, while the sum is 61.

The spelling of 285868538017 in words is "two hundred eighty-five billion, eight hundred sixty-eight million, five hundred thirty-eight thousand, seventeen".