168721701336 has 48 divisors (see below), whose sum is σ = 481004854200. Its totient is φ = 53280536832.

The previous prime is 168721701311. The next prime is 168721701341. The reversal of 168721701336 is 633107127861.

It is a junction number, because it is equal to n+sod(n) for n = 168721701291 and 168721701300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61665921 + ... + 61668656.

Almost surely, 2^168721701336 is an apocalyptic number.

It is an amenable number.

168721701336 is an abundant number, since it is smaller than the sum of its proper divisors (312283152864).

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

168721701336 is a wasteful number, since it uses less digits than its factorization.

168721701336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123334608 (or 123334601 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 168721701336 in words is "one hundred sixty-eight billion, seven hundred twenty-one million, seven hundred one thousand, three hundred thirty-six".