12584277687 has 4 divisors (see below), whose sum is σ = 16779036920. Its totient is φ = 8389518456.

The previous prime is 12584277647. The next prime is 12584277763. The reversal of 12584277687 is 78677248521.

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

It is not a de Polignac number, because 12584277687 - 2²⁰ = 12583229111 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 (12584277647) 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, 2097379612 + ... + 2097379617.

It is an arithmetic number, because the mean of its divisors is an integer number (4194759230).

Almost surely, 2^12584277687 is an apocalyptic number.

12584277687 is a deficient number, since it is larger than the sum of its proper divisors (4194759233).

12584277687 is an equidigital number, since it uses as much as digits as its factorization.

12584277687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4194759232.

The product of its digits is 10536960, while the sum is 57.

The spelling of 12584277687 in words is "twelve billion, five hundred eighty-four million, two hundred seventy-seven thousand, six hundred eighty-seven".