161795520320 has 112 divisors (see below), whose sum is σ = 459459226368. Its totient is φ = 53060874240.

The previous prime is 161795520307. The next prime is 161795520329. The reversal of 161795520320 is 23025597161.

161795520320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-3 number, since 3×161795520320³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161795520329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1518701 + ... + 1621740.

Almost surely, 2^161795520320 is an apocalyptic number.

161795520320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161795520320 is an abundant number, since it is smaller than the sum of its proper divisors (297663706048).

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

161795520320 is a wasteful number, since it uses less digits than its factorization.

161795520320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140488 (or 3140478 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 161795520320 in words is "one hundred sixty-one billion, seven hundred ninety-five million, five hundred twenty thousand, three hundred twenty".