170020166867 has 4 divisors (see below), whose sum is σ = 173974124280. Its totient is φ = 166066209456.

The previous prime is 170020166861. The next prime is 170020166893. The reversal of 170020166867 is 768661020071.

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 170020166867 - 2¹² = 170020162771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170020166861) 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, 1976978642 + ... + 1976978727.

It is an arithmetic number, because the mean of its divisors is an integer number (43493531070).

Almost surely, 2^170020166867 is an apocalyptic number.

170020166867 is a deficient number, since it is larger than the sum of its proper divisors (3953957413).

170020166867 is an equidigital number, since it uses as much as digits as its factorization.

170020166867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953957412.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 170020166867 in words is "one hundred seventy billion, twenty million, one hundred sixty-six thousand, eight hundred sixty-seven".