80685071356 has 24 divisors (see below), whose sum is σ = 149584833216. Its totient is φ = 37949091840.

The previous prime is 80685071293. The next prime is 80685071377. The reversal of 80685071356 is 65317058608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189861 + ... + 444316.

It is an arithmetic number, because the mean of its divisors is an integer number (6232701384).

Almost surely, 2^80685071356 is an apocalyptic number.

It is an amenable number.

80685071356 is a deficient number, since it is larger than the sum of its proper divisors (68899761860).

80685071356 is a wasteful number, since it uses less digits than its factorization.

80685071356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636069 (or 636067 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 80685071356 in words is "eighty billion, six hundred eighty-five million, seventy-one thousand, three hundred fifty-six".