161535035141 has 4 divisors (see below), whose sum is σ = 161727568800. Its totient is φ = 161342501484.

The previous prime is 161535035117. The next prime is 161535035149. The reversal of 161535035141 is 141530535161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161535035141 - 2¹⁰ = 161535034117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161535035149) 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 3 ways as a sum of consecutive naturals, for example, 96265571 + ... + 96267248.

It is an arithmetic number, because the mean of its divisors is an integer number (40431892200).

Almost surely, 2^161535035141 is an apocalyptic number.

It is an amenable number.

161535035141 is a deficient number, since it is larger than the sum of its proper divisors (192533659).

161535035141 is an equidigital number, since it uses as much as digits as its factorization.

161535035141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192533658.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 161535035141 in words is "one hundred sixty-one billion, five hundred thirty-five million, thirty-five thousand, one hundred forty-one".