161027906208 has 192 divisors, whose sum is σ = 465497528832. Its totient is φ = 48430448640.

The previous prime is 161027906203. The next prime is 161027906227. The reversal of 161027906208 is 802609720161.

It is a self number, because there is not a number n which added to its sum of digits gives 161027906208.

It is not an unprimeable number, because it can be changed into a prime (161027906203) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 67629178 + ... + 67631558.

It is an arithmetic number, because the mean of its divisors is an integer number (2424466296).

Almost surely, 2^161027906208 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 161027906208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232748764416).

161027906208 is an abundant number, since it is smaller than the sum of its proper divisors (304469622624).

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

161027906208 is a wasteful number, since it uses less digits than its factorization.

161027906208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607 (or 3599 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 161027906208 in words is "one hundred sixty-one billion, twenty-seven million, nine hundred six thousand, two hundred eight".