80246837809 has 4 divisors (see below), whose sum is σ = 80263557220. Its totient is φ = 80230118400.

The previous prime is 80246837777. The next prime is 80246837819. The reversal of 80246837809 is 90873864208.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62068248225 + 18178589584 = 249135^2 + 134828^2 .

It is a cyclic number.

It is not a de Polignac number, because 80246837809 - 2⁵ = 80246837777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80246837809.

It is not an unprimeable number, because it can be changed into a prime (80246837819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8352504 + ... + 8362105.

It is an arithmetic number, because the mean of its divisors is an integer number (20065889305).

Almost surely, 2^80246837809 is an apocalyptic number.

It is an amenable number.

80246837809 is a deficient number, since it is larger than the sum of its proper divisors (16719411).

80246837809 is a wasteful number, since it uses less digits than its factorization.

80246837809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16719410.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 80246837809 in words is "eighty billion, two hundred forty-six million, eight hundred thirty-seven thousand, eight hundred nine".