80161243 has 2 divisors, whose sum is σ = 80161244. Its totient is φ = 80161242.

The previous prime is 80161231. The next prime is 80161267. The reversal of 80161243 is 34216108.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80161243 is a prime.

It is not a weakly prime, because it can be changed into another prime (80161223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40080621 + 40080622.

It is an arithmetic number, because the mean of its divisors is an integer number (40080622).

Almost surely, 2^80161243 is an apocalyptic number.

80161243 is a deficient number, since it is larger than the sum of its proper divisors (1).

80161243 is an equidigital number, since it uses as much as digits as its factorization.

80161243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 80161243 is about 8953.2811304013. The cubic root of 80161243 is about 431.1762333254.

The spelling of 80161243 in words is "eighty million, one hundred sixty-one thousand, two hundred forty-three".