161742568848 has 240 divisors, whose sum is σ = 495211786560. Its totient is φ = 45344366592.

The previous prime is 161742568837. The next prime is 161742568861. The reversal of 161742568848 is 848865247161.

It is a happy number.

161742568848 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 161742568791 and 161742568800.

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 47 ways as a sum of consecutive naturals, for example, 135575740 + ... + 135576932.

It is an arithmetic number, because the mean of its divisors is an integer number (2063382444).

Almost surely, 2^161742568848 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 161742568848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247605893280).

161742568848 is an abundant number, since it is smaller than the sum of its proper divisors (333469217712).

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

161742568848 is a wasteful number, since it uses less digits than its factorization.

161742568848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254 (or 2241 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 60.

The spelling of 161742568848 in words is "one hundred sixty-one billion, seven hundred forty-two million, five hundred sixty-eight thousand, eight hundred forty-eight".