161832945211 has 16 divisors (see below), whose sum is σ = 187077496320. Its totient is φ = 137120575680.

The previous prime is 161832945181. The next prime is 161832945217. The reversal of 161832945211 is 112549238161.

It is a cyclic number.

It is not a de Polignac number, because 161832945211 - 2¹⁵ = 161832912443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161832945217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2592610 + ... + 2654296.

It is an arithmetic number, because the mean of its divisors is an integer number (11692343520).

Almost surely, 2^161832945211 is an apocalyptic number.

161832945211 is a deficient number, since it is larger than the sum of its proper divisors (25244551109).

161832945211 is an equidigital number, since it uses as much as digits as its factorization.

161832945211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65994.

The product of its digits is 103680, while the sum is 43.

The spelling of 161832945211 in words is "one hundred sixty-one billion, eight hundred thirty-two million, nine hundred forty-five thousand, two hundred eleven".