85685100517 has 4 divisors (see below), whose sum is σ = 85870968876. Its totient is φ = 85499232160.

The previous prime is 85685100503. The next prime is 85685100521. The reversal of 85685100517 is 71500158658.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60437797281 + 25247303236 = 245841^2 + 158894^2 .

It is a cyclic number.

It is not a de Polignac number, because 85685100517 - 2³⁵ = 51325362149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85685100217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92933488 + ... + 92934409.

It is an arithmetic number, because the mean of its divisors is an integer number (21467742219).

Almost surely, 2^85685100517 is an apocalyptic number.

It is an amenable number.

85685100517 is a deficient number, since it is larger than the sum of its proper divisors (185868359).

85685100517 is a wasteful number, since it uses less digits than its factorization.

85685100517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185868358.

The product of its (nonzero) digits is 336000, while the sum is 46.

The spelling of 85685100517 in words is "eighty-five billion, six hundred eighty-five million, one hundred thousand, five hundred seventeen".