12683642487 has 4 divisors (see below), whose sum is σ = 16911523320. Its totient is φ = 8455761656.

The previous prime is 12683642473. The next prime is 12683642501. The reversal of 12683642487 is 78424638621.

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

It is an interprime number because it is at equal distance from previous prime (12683642473) and next prime (12683642501).

It is a cyclic number.

It is not a de Polignac number, because 12683642487 - 2⁶ = 12683642423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12683642417) 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, 2113940412 + ... + 2113940417.

It is an arithmetic number, because the mean of its divisors is an integer number (4227880830).

Almost surely, 2^12683642487 is an apocalyptic number.

12683642487 is a deficient number, since it is larger than the sum of its proper divisors (4227880833).

12683642487 is an equidigital number, since it uses as much as digits as its factorization.

12683642487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227880832.

The product of its digits is 3096576, while the sum is 51.

The spelling of 12683642487 in words is "twelve billion, six hundred eighty-three million, six hundred forty-two thousand, four hundred eighty-seven".