161366267 has 2 divisors, whose sum is σ = 161366268. Its totient is φ = 161366266.

The previous prime is 161366203. The next prime is 161366279. The reversal of 161366267 is 762663161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161366267 - 2⁶ = 161366203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161366267.

It is not a weakly prime, because it can be changed into another prime (161366467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80683133 + 80683134.

It is an arithmetic number, because the mean of its divisors is an integer number (80683134).

Almost surely, 2^161366267 is an apocalyptic number.

161366267 is a deficient number, since it is larger than the sum of its proper divisors (1).

161366267 is an equidigital number, since it uses as much as digits as its factorization.

161366267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 161366267 is about 12703.0022829251. The cubic root of 161366267 is about 544.4244036663.

The spelling of 161366267 in words is "one hundred sixty-one million, three hundred sixty-six thousand, two hundred sixty-seven".