12681587207 has 4 divisors (see below), whose sum is σ = 12870864696. Its totient is φ = 12492309720.

The previous prime is 12681587203. The next prime is 12681587213. The reversal of 12681587207 is 70278518621.

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

It is a cyclic number.

It is not a de Polignac number, because 12681587207 - 2² = 12681587203 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 (12681587203) 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, 94638644 + ... + 94638777.

It is an arithmetic number, because the mean of its divisors is an integer number (3217716174).

Almost surely, 2^12681587207 is an apocalyptic number.

12681587207 is a deficient number, since it is larger than the sum of its proper divisors (189277489).

12681587207 is an equidigital number, since it uses as much as digits as its factorization.

12681587207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189277488.

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 12681587207 in words is "twelve billion, six hundred eighty-one million, five hundred eighty-seven thousand, two hundred seven".