12568623569 has 4 divisors (see below), whose sum is σ = 12569062896. Its totient is φ = 12568184244.

The previous prime is 12568623563. The next prime is 12568623589. The reversal of 12568623569 is 96532686521.

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 12568623569 - 2⁸ = 12568623313 is a prime.

It is a super-2 number, since 2×12568623569² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12568623569.

It is not an unprimeable number, because it can be changed into a prime (12568623563) 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, 173519 + ... + 235044.

It is an arithmetic number, because the mean of its divisors is an integer number (3142265724).

Almost surely, 2^12568623569 is an apocalyptic number.

It is an amenable number.

12568623569 is a deficient number, since it is larger than the sum of its proper divisors (439327).

12568623569 is an equidigital number, since it uses as much as digits as its factorization.

12568623569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439326.

The product of its digits is 4665600, while the sum is 53.

The spelling of 12568623569 in words is "twelve billion, five hundred sixty-eight million, six hundred twenty-three thousand, five hundred sixty-nine".