161353027243 has 2 divisors, whose sum is σ = 161353027244. Its totient is φ = 161353027242.

The previous prime is 161353027237. The next prime is 161353027247. The reversal of 161353027243 is 342720353161.

It is a strong prime.

It is an emirp because it is prime and its reverse (342720353161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161353027243 is a prime.

It is not a weakly prime, because it can be changed into another prime (161353027247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80676513621 + 80676513622.

It is an arithmetic number, because the mean of its divisors is an integer number (80676513622).

Almost surely, 2^161353027243 is an apocalyptic number.

161353027243 is a deficient number, since it is larger than the sum of its proper divisors (1).

161353027243 is an equidigital number, since it uses as much as digits as its factorization.

161353027243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 161353027243 in words is "one hundred sixty-one billion, three hundred fifty-three million, twenty-seven thousand, two hundred forty-three".