161083512722304 has 256 divisors, whose sum is σ = 491974560000000. Its totient is φ = 51826032728064.

The previous prime is 161083512722233. The next prime is 161083512722381. The reversal of 161083512722304 is 403227215380161.

161083512722304 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 8 + 351 + 272 + 23 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 161083512722304.

It is a congruent number.

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, 308328697 + ... + 308850695.

It is an arithmetic number, because the mean of its divisors is an integer number (1921775625000).

Almost surely, 2^{161083512722304} 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 161083512722304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245987280000000).

161083512722304 is an abundant number, since it is smaller than the sum of its proper divisors (330891047277696).

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

161083512722304 is a wasteful number, since it uses less digits than its factorization.

161083512722304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525130 (or 525112 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 161083512722304 in words is "one hundred sixty-one trillion, eighty-three billion, five hundred twelve million, seven hundred twenty-two thousand, three hundred four".