12587226823 has 4 divisors (see below), whose sum is σ = 12596161680. Its totient is φ = 12578291968.

The previous prime is 12587226811. The next prime is 12587226829. The reversal of 12587226823 is 32862278521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32862278521 = 419 ⋅78430259.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12587226823 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 (12587226829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4465315 + ... + 4468132.

It is an arithmetic number, because the mean of its divisors is an integer number (3149040420).

Almost surely, 2^12587226823 is an apocalyptic number.

12587226823 is a deficient number, since it is larger than the sum of its proper divisors (8934857).

12587226823 is an equidigital number, since it uses as much as digits as its factorization.

12587226823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8934856.

The product of its digits is 645120, while the sum is 46.

The spelling of 12587226823 in words is "twelve billion, five hundred eighty-seven million, two hundred twenty-six thousand, eight hundred twenty-three".