161795735309 has 8 divisors (see below), whose sum is σ = 174401284512. Its totient is φ = 149213003760.

The previous prime is 161795735293. The next prime is 161795735333. The reversal of 161795735309 is 903537597161.

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 161795735309 - 2⁴ = 161795735293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161795735369) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5689679 + ... + 5718044.

It is an arithmetic number, because the mean of its divisors is an integer number (21800160564).

Almost surely, 2^161795735309 is an apocalyptic number.

It is an amenable number.

161795735309 is a deficient number, since it is larger than the sum of its proper divisors (12605549203).

161795735309 is a wasteful number, since it uses less digits than its factorization.

161795735309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11408827.

The product of its (nonzero) digits is 5358150, while the sum is 56.

The spelling of 161795735309 in words is "one hundred sixty-one billion, seven hundred ninety-five million, seven hundred thirty-five thousand, three hundred nine".