80606467309 has 2 divisors, whose sum is σ = 80606467310. Its totient is φ = 80606467308.

The previous prime is 80606467289. The next prime is 80606467343. The reversal of 80606467309 is 90376460608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79368975625 + 1237491684 = 281725^2 + 35178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80606467309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80606467609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40303233654 + 40303233655.

It is an arithmetic number, because the mean of its divisors is an integer number (40303233655).

Almost surely, 2^80606467309 is an apocalyptic number.

It is an amenable number.

80606467309 is a deficient number, since it is larger than the sum of its proper divisors (1).

80606467309 is an equidigital number, since it uses as much as digits as its factorization.

80606467309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 80606467309 in words is "eighty billion, six hundred six million, four hundred sixty-seven thousand, three hundred nine".