161730485808 has 80 divisors (see below), whose sum is σ = 440011123200. Its totient is φ = 51047504640.

The previous prime is 161730485803. The next prime is 161730485863. The reversal of 161730485808 is 808584037161.

It is a happy number.

161730485808 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161730485803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1844073 + ... + 1929783.

It is an arithmetic number, because the mean of its divisors is an integer number (5500139040).

Almost surely, 2^161730485808 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 161730485808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220005561600).

161730485808 is an abundant number, since it is smaller than the sum of its proper divisors (278280637392).

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

161730485808 is a wasteful number, since it uses less digits than its factorization.

161730485808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87810 (or 87804 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 161730485808 in words is "one hundred sixty-one billion, seven hundred thirty million, four hundred eighty-five thousand, eight hundred eight".