163609867008 has 1152 divisors, whose sum is σ = 639297792000. Its totient is φ = 40243101696.

The previous prime is 163609866997. The next prime is 163609867021. The reversal of 163609867008 is 800768906361.

It is a happy number.

163609867008 is digitally balanced in base 3, 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 (1152).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5641719538 + ... + 5641719566.

It is an arithmetic number, because the mean of its divisors is an integer number (554946000).

Almost surely, 2^163609867008 is an apocalyptic number.

163609867008 is a gapful number since it is divisible by the number (18) 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 163609867008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319648896000).

163609867008 is an abundant number, since it is smaller than the sum of its proper divisors (475687924992).

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

163609867008 is an equidigital number, since it uses as much as digits as its factorization.

163609867008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 163609867008 in words is "one hundred sixty-three billion, six hundred nine million, eight hundred sixty-seven thousand, eight".