85685573566 has 8 divisors (see below), whose sum is σ = 128556628200. Its totient is φ = 42833364168.

The previous prime is 85685573543. The next prime is 85685573573. The reversal of 85685573566 is 66537558658.

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

It is a junction number, because it is equal to n+sod(n) for n = 85685573498 and 85685573507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4699936 + ... + 4718131.

It is an arithmetic number, because the mean of its divisors is an integer number (16069578525).

Almost surely, 2^85685573566 is an apocalyptic number.

85685573566 is a deficient number, since it is larger than the sum of its proper divisors (42871054634).

85685573566 is a wasteful number, since it uses less digits than its factorization.

85685573566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9422618.

The product of its digits is 181440000, while the sum is 64.

The spelling of 85685573566 in words is "eighty-five billion, six hundred eighty-five million, five hundred seventy-three thousand, five hundred sixty-six".