80266057309 has 2 divisors, whose sum is σ = 80266057310. Its totient is φ = 80266057308.

The previous prime is 80266057259. The next prime is 80266057343. The reversal of 80266057309 is 90375066208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62662605625 + 17603451684 = 250325^2 + 132678^2 .

It is a cyclic number.

It is not a de Polignac number, because 80266057309 - 2⁹ = 80266056797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80266057369) 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, 40133028654 + 40133028655.

It is an arithmetic number, because the mean of its divisors is an integer number (40133028655).

Almost surely, 2^80266057309 is an apocalyptic number.

It is an amenable number.

80266057309 is a deficient number, since it is larger than the sum of its proper divisors (1).

80266057309 is an equidigital number, since it uses as much as digits as its factorization.

80266057309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 80266057309 in words is "eighty billion, two hundred sixty-six million, fifty-seven thousand, three hundred nine".