161761747343 has 16 divisors (see below), whose sum is σ = 189265502976. Its totient is φ = 135359985600.

The previous prime is 161761747321. The next prime is 161761747349. The reversal of 161761747343 is 343747167161.

It is not a de Polignac number, because 161761747343 - 2⁸ = 161761747087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161761747291 and 161761747300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161761747349) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 465068 + ... + 734718.

It is an arithmetic number, because the mean of its divisors is an integer number (11829093936).

Almost surely, 2^161761747343 is an apocalyptic number.

161761747343 is a deficient number, since it is larger than the sum of its proper divisors (27503755633).

161761747343 is a wasteful number, since it uses less digits than its factorization.

161761747343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271694.

The product of its digits is 1778112, while the sum is 50.

The spelling of 161761747343 in words is "one hundred sixty-one billion, seven hundred sixty-one million, seven hundred forty-seven thousand, three hundred forty-three".