161841722267013 has 16 divisors (see below), whose sum is σ = 217491745376256. Its totient is φ = 107043118902720.

The previous prime is 161841722267009. The next prime is 161841722267111. The reversal of 161841722267013 is 310762227148161.

161841722267013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161841722267013 - 2² = 161841722267009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161841722267513) 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, 19311795 + ... + 26393727.

It is an arithmetic number, because the mean of its divisors is an integer number (13593234086016).

Almost surely, 2^{161841722267013} is an apocalyptic number.

It is an amenable number.

161841722267013 is a deficient number, since it is larger than the sum of its proper divisors (55650023109243).

161841722267013 is a wasteful number, since it uses less digits than its factorization.

161841722267013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142044.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 161841722267013 in words is "one hundred sixty-one trillion, eight hundred forty-one billion, seven hundred twenty-two million, two hundred sixty-seven thousand, thirteen".