173997830623 has 4 divisors (see below), whose sum is σ = 174015910440. Its totient is φ = 173979750808.

The previous prime is 173997830599. The next prime is 173997830639. The reversal of 173997830623 is 326038799371.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326038799371 = 19 ⋅17159936809.

It is a cyclic number.

It is not a de Polignac number, because 173997830623 - 2¹³ = 173997822431 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173997830723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9025465 + ... + 9044722.

It is an arithmetic number, because the mean of its divisors is an integer number (43503977610).

Almost surely, 2^173997830623 is an apocalyptic number.

173997830623 is a deficient number, since it is larger than the sum of its proper divisors (18079817).

173997830623 is an equidigital number, since it uses as much as digits as its factorization.

173997830623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18079816.

The product of its (nonzero) digits is 10287648, while the sum is 58.

The spelling of 173997830623 in words is "one hundred seventy-three billion, nine hundred ninety-seven million, eight hundred thirty thousand, six hundred twenty-three".