80817250243 has 2 divisors, whose sum is σ = 80817250244. Its totient is φ = 80817250242.

The previous prime is 80817250237. The next prime is 80817250279. The reversal of 80817250243 is 34205271808.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80817250243 - 2⁵ = 80817250211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80817250196 and 80817250205.

It is not a weakly prime, because it can be changed into another prime (80817250223) 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, 40408625121 + 40408625122.

It is an arithmetic number, because the mean of its divisors is an integer number (40408625122).

Almost surely, 2^80817250243 is an apocalyptic number.

80817250243 is a deficient number, since it is larger than the sum of its proper divisors (1).

80817250243 is an equidigital number, since it uses as much as digits as its factorization.

80817250243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 80817250243 in words is "eighty billion, eight hundred seventeen million, two hundred fifty thousand, two hundred forty-three".