170161834394 has 4 divisors (see below), whose sum is σ = 255242751594. Its totient is φ = 85080917196.

The previous prime is 170161834393. The next prime is 170161834411. The reversal of 170161834394 is 493438161071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493438161071 = 419 ⋅1177656709.

It can be written as a sum of positive squares in only one way, i.e., 124282336369 + 45879498025 = 352537^2 + 214195^2 .

It is not an unprimeable number, because it can be changed into a prime (170161834393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42540458597 + ... + 42540458600.

Almost surely, 2^170161834394 is an apocalyptic number.

170161834394 is a deficient number, since it is larger than the sum of its proper divisors (85080917200).

170161834394 is an equidigital number, since it uses as much as digits as its factorization.

170161834394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85080917199.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 170161834394 in words is "one hundred seventy billion, one hundred sixty-one million, eight hundred thirty-four thousand, three hundred ninety-four".