161055049181184 has 144 divisors (see below), whose sum is σ = 465229000323360. Its totient is φ = 53676654796800.

The previous prime is 161055049181177. The next prime is 161055049181189. The reversal of 161055049181184 is 481181940550161.

161055049181184 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 5 + 504 + 9 + 18 + 118 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 161055049181184.

It is not an unprimeable number, because it can be changed into a prime (161055049181189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118227589 + ... + 119582075.

It is an arithmetic number, because the mean of its divisors is an integer number (3230756946690).

Almost surely, 2^{161055049181184} 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 161055049181184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232614500161680).

161055049181184 is an abundant number, since it is smaller than the sum of its proper divisors (304173951142176).

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

161055049181184 is a wasteful number, since it uses less digits than its factorization.

161055049181184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360966 (or 1360943 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 54.

The spelling of 161055049181184 in words is "one hundred sixty-one trillion, fifty-five billion, forty-nine million, one hundred eighty-one thousand, one hundred eighty-four".