12579618559 has 4 divisors (see below), whose sum is σ = 12590362360. Its totient is φ = 12568874760.

The previous prime is 12579618547. The next prime is 12579618589. The reversal of 12579618559 is 95581697521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95581697521 = 19 ⋅5030615659.

It is a cyclic number.

It is not a de Polignac number, because 12579618559 - 2⁷ = 12579618431 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 (12579618589) 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, 5370144 + ... + 5372485.

It is an arithmetic number, because the mean of its divisors is an integer number (3147590590).

Almost surely, 2^12579618559 is an apocalyptic number.

12579618559 is a deficient number, since it is larger than the sum of its proper divisors (10743801).

12579618559 is a wasteful number, since it uses less digits than its factorization.

12579618559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10743800.

The product of its digits is 6804000, while the sum is 58.

The spelling of 12579618559 in words is "twelve billion, five hundred seventy-nine million, six hundred eighteen thousand, five hundred fifty-nine".