170056042073 has 4 divisors (see below), whose sum is σ = 170072791680. Its totient is φ = 170039292468.

The previous prime is 170056041997. The next prime is 170056042127. The reversal of 170056042073 is 370240650071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170056042073 is a prime.

It is a super-2 number, since 2×170056042073² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170056041073) 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, 8359565 + ... + 8379882.

It is an arithmetic number, because the mean of its divisors is an integer number (42518197920).

Almost surely, 2^170056042073 is an apocalyptic number.

It is an amenable number.

170056042073 is a deficient number, since it is larger than the sum of its proper divisors (16749607).

170056042073 is a wasteful number, since it uses less digits than its factorization.

170056042073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16749606.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 170056042073 in words is "one hundred seventy billion, fifty-six million, forty-two thousand, seventy-three".