80816012709 has 8 divisors (see below), whose sum is σ = 112439669952. Its totient is φ = 51534848640.

The previous prime is 80816012647. The next prime is 80816012723. The reversal of 80816012709 is 90721061808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80816012709 - 2¹¹ = 80816010661 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80816012729) 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 7 ways as a sum of consecutive naturals, for example, 585623212 + ... + 585623349.

It is an arithmetic number, because the mean of its divisors is an integer number (14054958744).

Almost surely, 2^80816012709 is an apocalyptic number.

It is an amenable number.

80816012709 is a deficient number, since it is larger than the sum of its proper divisors (31623657243).

80816012709 is a wasteful number, since it uses less digits than its factorization.

80816012709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171246587.

The product of its (nonzero) digits is 48384, while the sum is 42.

The spelling of 80816012709 in words is "eighty billion, eight hundred sixteen million, twelve thousand, seven hundred nine".