161230047173 has 16 divisors (see below), whose sum is σ = 181303772160. Its totient is φ = 142260966144.

The previous prime is 161230047163. The next prime is 161230047203. The reversal of 161230047173 is 371740032161.

It is a cyclic number.

It is not a de Polignac number, because 161230047173 - 2⁶ = 161230047109 is a prime.

It is a super-2 number, since 2×161230047173² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161230047163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264140 + ... + 626282.

It is an arithmetic number, because the mean of its divisors is an integer number (11331485760).

Almost surely, 2^161230047173 is an apocalyptic number.

161230047173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

161230047173 is a deficient number, since it is larger than the sum of its proper divisors (20073724987).

161230047173 is a wasteful number, since it uses less digits than its factorization.

161230047173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363668.

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 161230047173 in words is "one hundred sixty-one billion, two hundred thirty million, forty-seven thousand, one hundred seventy-three".