80689912611791 has 4 divisors (see below), whose sum is σ = 92217042984912. Its totient is φ = 69162782238672.

The previous prime is 80689912611773. The next prime is 80689912611797. The reversal of 80689912611791 is 19711621998608.

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

It is a cyclic number.

It is not a de Polignac number, because 80689912611791 - 2¹⁰ = 80689912610767 is a prime.

It is a super-3 number, since 3×80689912611791³ (a number of 43 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 (80689912611797) 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, 5763565186550 + ... + 5763565186563.

It is an arithmetic number, because the mean of its divisors is an integer number (23054260746228).

Almost surely, 2^{80689912611791} is an apocalyptic number.

80689912611791 is a deficient number, since it is larger than the sum of its proper divisors (11527130373121).

80689912611791 is a wasteful number, since it uses less digits than its factorization.

80689912611791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11527130373120.

The product of its (nonzero) digits is 23514624, while the sum is 68.

The spelling of 80689912611791 in words is "eighty trillion, six hundred eighty-nine billion, nine hundred twelve million, six hundred eleven thousand, seven hundred ninety-one".