161501775343 has 8 divisors (see below), whose sum is σ = 162623466720. Its totient is φ = 160383946080.

The previous prime is 161501775329. The next prime is 161501775349. The reversal of 161501775343 is 343577105161.

161501775343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161501775343 - 2¹³ = 161501767151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161501775343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161501775349) 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 7 ways as a sum of consecutive naturals, for example, 881580 + ... + 1048897.

It is an arithmetic number, because the mean of its divisors is an integer number (20327933340).

Almost surely, 2^161501775343 is an apocalyptic number.

161501775343 is a deficient number, since it is larger than the sum of its proper divisors (1121691377).

161501775343 is a wasteful number, since it uses less digits than its factorization.

161501775343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931057.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 161501775343 in words is "one hundred sixty-one billion, five hundred one million, seven hundred seventy-five thousand, three hundred forty-three".