12080517823 has 4 divisors (see below), whose sum is σ = 13178746728. Its totient is φ = 10982288920.

The previous prime is 12080517811. The next prime is 12080517833. The reversal of 12080517823 is 32871508021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32871508021 = 11 ⋅2988318911.

It is a cyclic number.

It is not a de Polignac number, because 12080517823 - 2⁹ = 12080517311 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 (12080517833) 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, 549114436 + ... + 549114457.

It is an arithmetic number, because the mean of its divisors is an integer number (3294686682).

Almost surely, 2^12080517823 is an apocalyptic number.

12080517823 is a deficient number, since it is larger than the sum of its proper divisors (1098228905).

12080517823 is a wasteful number, since it uses less digits than its factorization.

12080517823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098228904.

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 12080517823 in words is "twelve billion, eighty million, five hundred seventeen thousand, eight hundred twenty-three".