161216359 has 2 divisors, whose sum is σ = 161216360. Its totient is φ = 161216358.

The previous prime is 161216353. The next prime is 161216369. The reversal of 161216359 is 953612161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161216359 - 2¹¹ = 161214311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161216353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80608179 + 80608180.

It is an arithmetic number, because the mean of its divisors is an integer number (80608180).

Almost surely, 2^161216359 is an apocalyptic number.

161216359 is a deficient number, since it is larger than the sum of its proper divisors (1).

161216359 is an equidigital number, since it uses as much as digits as its factorization.

161216359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 34.

The square root of 161216359 is about 12697.1004170244. The cubic root of 161216359 is about 544.2557627625.

It can be divided in two parts, 1612 and 16359, that added together give a palindrome (17971).

The spelling of 161216359 in words is "one hundred sixty-one million, two hundred sixteen thousand, three hundred fifty-nine".