85308206705 has 8 divisors (see below), whose sum is σ = 102553639272. Its totient is φ = 68124037888.

The previous prime is 85308206693. The next prime is 85308206749. The reversal of 85308206705 is 50760280358.

It can be written as a sum of positive squares in 4 ways, for example, as 11963109376 + 73345097329 = 109376^2 + 270823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85308206705 - 2⁴ = 85308206689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15312872 + ... + 15318441.

It is an arithmetic number, because the mean of its divisors is an integer number (12819204909).

Almost surely, 2^85308206705 is an apocalyptic number.

It is an amenable number.

85308206705 is a deficient number, since it is larger than the sum of its proper divisors (17245432567).

85308206705 is a wasteful number, since it uses less digits than its factorization.

85308206705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30631875.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 85308206705 in words is "eighty-five billion, three hundred eight million, two hundred six thousand, seven hundred five".