85685653171 has 4 divisors (see below), whose sum is σ = 85687450200. Its totient is φ = 85683856144.

The previous prime is 85685653169. The next prime is 85685653181. The reversal of 85685653171 is 17135658658.

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

It is a cyclic number.

It is not a de Polignac number, because 85685653171 - 2¹ = 85685653169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85685653181) 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, 824986 + ... + 923023.

It is an arithmetic number, because the mean of its divisors is an integer number (21421862550).

Almost surely, 2^85685653171 is an apocalyptic number.

85685653171 is a deficient number, since it is larger than the sum of its proper divisors (1797029).

85685653171 is a wasteful number, since it uses less digits than its factorization.

85685653171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797028.

The product of its digits is 6048000, while the sum is 55.

The spelling of 85685653171 in words is "eighty-five billion, six hundred eighty-five million, six hundred fifty-three thousand, one hundred seventy-one".