85847380259 has 2 divisors, whose sum is σ = 85847380260. Its totient is φ = 85847380258.

The previous prime is 85847380207. The next prime is 85847380273. The reversal of 85847380259 is 95208374858.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85847380259 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 85847380198 and 85847380207.

It is not a weakly prime, because it can be changed into another prime (85847380459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42923690129 + 42923690130.

It is an arithmetic number, because the mean of its divisors is an integer number (42923690130).

Almost surely, 2^85847380259 is an apocalyptic number.

85847380259 is a deficient number, since it is larger than the sum of its proper divisors (1).

85847380259 is an equidigital number, since it uses as much as digits as its factorization.

85847380259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19353600, while the sum is 59.

The spelling of 85847380259 in words is "eighty-five billion, eight hundred forty-seven million, three hundred eighty thousand, two hundred fifty-nine".