42364223222161 has 4 divisors (see below), whose sum is σ = 42364241449524. Its totient is φ = 42364204994800.

The previous prime is 42364223222149. The next prime is 42364223222171. The reversal of 42364223222161 is 16122232246324.

42364223222161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8043009440400 + 34321213781761 = 2836020^2 + 5858431^2 .

It is a cyclic number.

It is not a de Polignac number, because 42364223222161 - 2¹³ = 42364223213969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42364223222141) 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 3 ways as a sum of consecutive naturals, for example, 5012050 + ... + 10480891.

It is an arithmetic number, because the mean of its divisors is an integer number (10591060362381).

Almost surely, 2^{42364223222161} is an apocalyptic number.

It is an amenable number.

42364223222161 is a deficient number, since it is larger than the sum of its proper divisors (18227363).

42364223222161 is a wasteful number, since it uses less digits than its factorization.

42364223222161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18227362.

The product of its digits is 331776, while the sum is 40.

Adding to 42364223222161 its reverse (16122232246324), we get a palindrome (58486455468485).

The spelling of 42364223222161 in words is "forty-two trillion, three hundred sixty-four billion, two hundred twenty-three million, two hundred twenty-two thousand, one hundred sixty-one".