173189977912 has 128 divisors (see below), whose sum is σ = 379499904000. Its totient is φ = 72572544000.

The previous prime is 173189977871. The next prime is 173189977913. The reversal of 173189977912 is 219779981371.

173189977912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173189977913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208913914 + ... + 208914742.

It is an arithmetic number, because the mean of its divisors is an integer number (2964843000).

Almost surely, 2^173189977912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 173189977912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189749952000).

173189977912 is an abundant number, since it is smaller than the sum of its proper divisors (206309926088).

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

173189977912 is a wasteful number, since it uses less digits than its factorization.

173189977912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349 (or 1345 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 64.

The spelling of 173189977912 in words is "one hundred seventy-three billion, one hundred eighty-nine million, nine hundred seventy-seven thousand, nine hundred twelve".