161552144551350 has 192 divisors, whose sum is σ = 485369696351232. Its totient is φ = 34714622976000.

The previous prime is 161552144551327. The next prime is 161552144551519. The reversal of 161552144551350 is 53155441255161.

It is a self number, because there is not a number n which added to its sum of digits gives 161552144551350.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10589335 + ... + 20862365.

It is an arithmetic number, because the mean of its divisors is an integer number (2527967168496).

Almost surely, 2^{161552144551350} is an apocalyptic number.

161552144551350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161552144551350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242684848175616).

161552144551350 is an abundant number, since it is smaller than the sum of its proper divisors (323817551799882).

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

161552144551350 is a wasteful number, since it uses less digits than its factorization.

161552144551350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10273951 (or 10273946 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 48.

The spelling of 161552144551350 in words is "one hundred sixty-one trillion, five hundred fifty-two billion, one hundred forty-four million, five hundred fifty-one thousand, three hundred fifty".