173728084845 has 32 divisors (see below), whose sum is σ = 317690081280. Its totient is φ = 79414585920.

The previous prime is 173728084841. The next prime is 173728084861. The reversal of 173728084845 is 548480827371.

It is not a de Polignac number, because 173728084845 - 2² = 173728084841 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173728084841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3548946 + ... + 3597564.

It is an arithmetic number, because the mean of its divisors is an integer number (9927815040).

Almost surely, 2^173728084845 is an apocalyptic number.

173728084845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

173728084845 is a deficient number, since it is larger than the sum of its proper divisors (143961996435).

173728084845 is a wasteful number, since it uses less digits than its factorization.

173728084845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82665.

The product of its (nonzero) digits is 12042240, while the sum is 57.

The spelling of 173728084845 in words is "one hundred seventy-three billion, seven hundred twenty-eight million, eighty-four thousand, eight hundred forty-five".