72353143171 has 2 divisors, whose sum is σ = 72353143172. Its totient is φ = 72353143170.

The previous prime is 72353143157. The next prime is 72353143193. The reversal of 72353143171 is 17134135327.

It is a weak prime.

It is an emirp because it is prime and its reverse (17134135327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72353143171 - 2¹¹ = 72353141123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72353143171.

It is not a weakly prime, because it can be changed into another prime (72353143141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36176571585 + 36176571586.

It is an arithmetic number, because the mean of its divisors is an integer number (36176571586).

Almost surely, 2^72353143171 is an apocalyptic number.

72353143171 is a deficient number, since it is larger than the sum of its proper divisors (1).

72353143171 is an equidigital number, since it uses as much as digits as its factorization.

72353143171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

Adding to 72353143171 its reverse (17134135327), we get a palindrome (89487278498).

The spelling of 72353143171 in words is "seventy-two billion, three hundred fifty-three million, one hundred forty-three thousand, one hundred seventy-one".