163710605680 has 80 divisors (see below), whose sum is σ = 395905517568. Its totient is φ = 62887968000.

The previous prime is 163710605677. The next prime is 163710605699. The reversal of 163710605680 is 86506017361.

163710605680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×163710605680² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 72925 + ... + 576835.

Almost surely, 2^163710605680 is an apocalyptic number.

163710605680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163710605680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197952758784).

163710605680 is an abundant number, since it is smaller than the sum of its proper divisors (232194911888).

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

163710605680 is a wasteful number, since it uses less digits than its factorization.

163710605680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504086 (or 504080 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 163710605680 in words is "one hundred sixty-three billion, seven hundred ten million, six hundred five thousand, six hundred eighty".