161343604160 has 224 divisors, whose sum is σ = 409869680640. Its totient is φ = 60322848768.

The previous prime is 161343604139. The next prime is 161343604189. The reversal of 161343604160 is 61406343161.

It is a self number, because there is not a number n which added to its sum of digits gives 161343604160.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172191212 + ... + 172192148.

It is an arithmetic number, because the mean of its divisors is an integer number (1829775360).

Almost surely, 2^161343604160 is an apocalyptic number.

161343604160 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 161343604160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204934840320).

161343604160 is an abundant number, since it is smaller than the sum of its proper divisors (248526076480).

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

161343604160 is a wasteful number, since it uses less digits than its factorization.

161343604160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 161343604160 in words is "one hundred sixty-one billion, three hundred forty-three million, six hundred four thousand, one hundred sixty".