161144301111 has 8 divisors (see below), whose sum is σ = 214869905520. Its totient is φ = 107424115392.

The previous prime is 161144301037. The next prime is 161144301127. The reversal of 161144301111 is 111103441161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161144301111 - 2¹⁷ = 161144170039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161144301611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1284766 + ... + 1404603.

It is an arithmetic number, because the mean of its divisors is an integer number (26858738190).

Almost surely, 2^161144301111 is an apocalyptic number.

161144301111 is a deficient number, since it is larger than the sum of its proper divisors (53725604409).

161144301111 is a wasteful number, since it uses less digits than its factorization.

161144301111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709345.

The product of its (nonzero) digits is 288, while the sum is 24.

Adding to 161144301111 its reverse (111103441161), we get a palindrome (272247742272).

The spelling of 161144301111 in words is "one hundred sixty-one billion, one hundred forty-four million, three hundred one thousand, one hundred eleven".