163770067656 has 192 divisors, whose sum is σ = 486021856320. Its totient is φ = 49512798720.

The previous prime is 163770067631. The next prime is 163770067663. The reversal of 163770067656 is 656760077361.

It is a happy number.

163770067656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26398651 + ... + 26404853.

It is an arithmetic number, because the mean of its divisors is an integer number (2531363835).

Almost surely, 2^163770067656 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 163770067656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243010928160).

163770067656 is an abundant number, since it is smaller than the sum of its proper divisors (322251788664).

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

163770067656 is a wasteful number, since it uses less digits than its factorization.

163770067656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6716 (or 6709 counting only the distinct ones).

The product of its (nonzero) digits is 6667920, while the sum is 54.

The spelling of 163770067656 in words is "one hundred sixty-three billion, seven hundred seventy million, sixty-seven thousand, six hundred fifty-six".