80685071353 has 4 divisors (see below), whose sum is σ = 80687164068. Its totient is φ = 80682978640.

The previous prime is 80685071293. The next prime is 80685071377. The reversal of 80685071353 is 35317058608.

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 74238266089 + 6446805264 = 272467^2 + 80292^2 .

It is a cyclic number.

It is not a de Polignac number, because 80685071353 - 2⁹ = 80685070841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80685071653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 987418 + ... + 1066003.

It is an arithmetic number, because the mean of its divisors is an integer number (20171791017).

Almost surely, 2^80685071353 is an apocalyptic number.

It is an amenable number.

80685071353 is a deficient number, since it is larger than the sum of its proper divisors (2092715).

80685071353 is a wasteful number, since it uses less digits than its factorization.

80685071353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092714.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 80685071353 in words is "eighty billion, six hundred eighty-five million, seventy-one thousand, three hundred fifty-three".