161184106980 has 192 divisors, whose sum is σ = 548097473280. Its totient is φ = 39083793408.

The previous prime is 161184106943. The next prime is 161184106997. The reversal of 161184106980 is 89601481161.

It is a happy number.

161184106980 is a `hidden beast` number, since 161 + 18 + 410 + 69 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 63 ways as a sum of consecutive naturals, for example, 298992 + ... + 641688.

It is an arithmetic number, because the mean of its divisors is an integer number (2854674340).

Almost surely, 2^161184106980 is an apocalyptic number.

161184106980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161184106980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274048736640).

161184106980 is an abundant number, since it is smaller than the sum of its proper divisors (386913366300).

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

161184106980 is a wasteful number, since it uses less digits than its factorization.

161184106980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342795 (or 342787 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The spelling of 161184106980 in words is "one hundred sixty-one billion, one hundred eighty-four million, one hundred six thousand, nine hundred eighty".