12566144582 has 4 divisors (see below), whose sum is σ = 18849216876. Its totient is φ = 6283072290.

The previous prime is 12566144581. The next prime is 12566144623. The reversal of 12566144582 is 28544166521.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12566144581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3141536144 + ... + 3141536147.

It is an arithmetic number, because the mean of its divisors is an integer number (4712304219).

Almost surely, 2^12566144582 is an apocalyptic number.

12566144582 is a deficient number, since it is larger than the sum of its proper divisors (6283072294).

12566144582 is an equidigital number, since it uses as much as digits as its factorization.

12566144582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6283072293.

The product of its digits is 460800, while the sum is 44.

The spelling of 12566144582 in words is "twelve billion, five hundred sixty-six million, one hundred forty-four thousand, five hundred eighty-two".