80707680517 has 4 divisors (see below), whose sum is σ = 80717399776. Its totient is φ = 80697961260.

The previous prime is 80707680497. The next prime is 80707680539. The reversal of 80707680517 is 71508670708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80707680517 - 2²⁷ = 80573462789 is a prime.

It is a super-3 number, since 3×80707680517³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80707680017) 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, 4847163 + ... + 4863784.

It is an arithmetic number, because the mean of its divisors is an integer number (20179349944).

Almost surely, 2^80707680517 is an apocalyptic number.

It is an amenable number.

80707680517 is a deficient number, since it is larger than the sum of its proper divisors (9719259).

80707680517 is an equidigital number, since it uses as much as digits as its factorization.

80707680517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9719258.

The product of its (nonzero) digits is 658560, while the sum is 49.

The spelling of 80707680517 in words is "eighty billion, seven hundred seven million, six hundred eighty thousand, five hundred seventeen".