80243844803197 has 2 divisors, whose sum is σ = 80243844803198. Its totient is φ = 80243844803196.

The previous prime is 80243844803191. The next prime is 80243844803231. The reversal of 80243844803197 is 79130844834208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78978431294361 + 1265413508836 = 8886981^2 + 1124906^2 .

It is a cyclic number.

It is not a de Polignac number, because 80243844803197 - 2¹¹ = 80243844801149 is a prime.

It is a super-2 number, since 2×80243844803197² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80243844803191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40121922401598 + 40121922401599.

It is an arithmetic number, because the mean of its divisors is an integer number (40121922401599).

Almost surely, 2^{80243844803197} is an apocalyptic number.

It is an amenable number.

80243844803197 is a deficient number, since it is larger than the sum of its proper divisors (1).

80243844803197 is an equidigital number, since it uses as much as digits as its factorization.

80243844803197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37158912, while the sum is 61.

The spelling of 80243844803197 in words is "eighty trillion, two hundred forty-three billion, eight hundred forty-four million, eight hundred three thousand, one hundred ninety-seven".