12566545759 has 12 divisors (see below), whose sum is σ = 12860288784. Its totient is φ = 12279012032.

The previous prime is 12566545753. The next prime is 12566545787. The reversal of 12566545759 is 95754566521.

It is not a de Polignac number, because 12566545759 - 2³ = 12566545751 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 (12566545751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 570519 + ... + 592135.

It is an arithmetic number, because the mean of its divisors is an integer number (1071690732).

Almost surely, 2^12566545759 is an apocalyptic number.

12566545759 is a deficient number, since it is larger than the sum of its proper divisors (293743025).

12566545759 is an equidigital number, since it uses as much as digits as its factorization.

12566545759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21902 (or 21843 counting only the distinct ones).

The product of its digits is 11340000, while the sum is 55.

The spelling of 12566545759 in words is "twelve billion, five hundred sixty-six million, five hundred forty-five thousand, seven hundred fifty-nine".