80143717085 has 4 divisors (see below), whose sum is σ = 96172460508. Its totient is φ = 64114973664.

The previous prime is 80143717081. The next prime is 80143717109. The reversal of 80143717085 is 58071734108.

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 12903596836 + 67240120249 = 113594^2 + 259307^2 .

It is a cyclic number.

It is not a de Polignac number, because 80143717085 - 2² = 80143717081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80143717081) 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, 8014371704 + ... + 8014371713.

It is an arithmetic number, because the mean of its divisors is an integer number (24043115127).

Almost surely, 2^80143717085 is an apocalyptic number.

It is an amenable number.

80143717085 is a deficient number, since it is larger than the sum of its proper divisors (16028743423).

80143717085 is a wasteful number, since it uses less digits than its factorization.

80143717085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16028743422.

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 80143717085 in words is "eighty billion, one hundred forty-three million, seven hundred seventeen thousand, eighty-five".