170705870885 has 16 divisors (see below), whose sum is σ = 223521318720. Its totient is φ = 124120938240.

The previous prime is 170705870879. The next prime is 170705870927. The reversal of 170705870885 is 588078507071.

It is not a de Polignac number, because 170705870885 - 2⁴ = 170705870869 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 170705870885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119012 + ... + 596301.

It is an arithmetic number, because the mean of its divisors is an integer number (13970082420).

Almost surely, 2^170705870885 is an apocalyptic number.

It is an amenable number.

170705870885 is a deficient number, since it is larger than the sum of its proper divisors (52815447835).

170705870885 is a wasteful number, since it uses less digits than its factorization.

170705870885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719668.

The product of its (nonzero) digits is 4390400, while the sum is 56.

The spelling of 170705870885 in words is "one hundred seventy billion, seven hundred five million, eight hundred seventy thousand, eight hundred eighty-five".