80711771219 has 4 divisors (see below), whose sum is σ = 80718159720. Its totient is φ = 80705382720.

The previous prime is 80711771159. The next prime is 80711771243. The reversal of 80711771219 is 91217711708.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80711771219 is a prime.

It is a super-3 number, since 3×80711771219³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 80711771219.

It is not an unprimeable number, because it can be changed into a prime (80711771269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3175262 + ... + 3200579.

It is an arithmetic number, because the mean of its divisors is an integer number (20179539930).

Almost surely, 2^80711771219 is an apocalyptic number.

80711771219 is a deficient number, since it is larger than the sum of its proper divisors (6388501).

80711771219 is a wasteful number, since it uses less digits than its factorization.

80711771219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388500.

The product of its (nonzero) digits is 49392, while the sum is 44.

The spelling of 80711771219 in words is "eighty billion, seven hundred eleven million, seven hundred seventy-one thousand, two hundred nineteen".