161044748193408 has 256 divisors, whose sum is σ = 445850908174080. Its totient is φ = 51457351680000.

The previous prime is 161044748193397. The next prime is 161044748193529. The reversal of 161044748193408 is 804391847440161.

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 31 ways as a sum of consecutive naturals, for example, 1393050808 + ... + 1393166408.

It is an arithmetic number, because the mean of its divisors is an integer number (1741605110055).

Almost surely, 2^{161044748193408} 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 161044748193408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222925454087040).

161044748193408 is an abundant number, since it is smaller than the sum of its proper divisors (284806159980672).

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

161044748193408 is a wasteful number, since it uses less digits than its factorization.

161044748193408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117107 (or 117095 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 60.

The spelling of 161044748193408 in words is "one hundred sixty-one trillion, forty-four billion, seven hundred forty-eight million, one hundred ninety-three thousand, four hundred eight".