173221318160 has 80 divisors (see below), whose sum is σ = 439420660992. Its totient is φ = 62979763200.

The previous prime is 173221318057. The next prime is 173221318181. The reversal of 173221318160 is 61813122371.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 173221318160.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8050937 + ... + 8072423.

Almost surely, 2^173221318160 is an apocalyptic number.

173221318160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

173221318160 is an abundant number, since it is smaller than the sum of its proper divisors (266199342832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

173221318160 is a wasteful number, since it uses less digits than its factorization.

173221318160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30672 (or 30666 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 173221318160 in words is "one hundred seventy-three billion, two hundred twenty-one million, three hundred eighteen thousand, one hundred sixty".