173936977812 has 72 divisors (see below), whose sum is σ = 488769182720. Its totient is φ = 51792644160.

The previous prime is 173936977807. The next prime is 173936977813. The reversal of 173936977812 is 218779639371.

It is a self number, because there is not a number n which added to its sum of digits gives 173936977812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173936977813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5980012 + ... + 6009027.

Almost surely, 2^173936977812 is an apocalyptic number.

173936977812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

173936977812 is an abundant number, since it is smaller than the sum of its proper divisors (314832204908).

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

173936977812 is a wasteful number, since it uses less digits than its factorization.

173936977812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11989093 (or 11989088 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 63.

It can be divided in two parts, 1739369 and 77812, that added together give a palindrome (1817181).

The spelling of 173936977812 in words is "one hundred seventy-three billion, nine hundred thirty-six million, nine hundred seventy-seven thousand, eight hundred twelve".