12688147187 has 2 divisors, whose sum is σ = 12688147188. Its totient is φ = 12688147186.

The previous prime is 12688147151. The next prime is 12688147231. The reversal of 12688147187 is 78174188621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12688147187 is a prime.

It is not a weakly prime, because it can be changed into another prime (12688147687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6344073593 + 6344073594.

It is an arithmetic number, because the mean of its divisors is an integer number (6344073594).

Almost surely, 2^12688147187 is an apocalyptic number.

12688147187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12688147187 is an equidigital number, since it uses as much as digits as its factorization.

12688147187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1204224, while the sum is 53.

The spelling of 12688147187 in words is "twelve billion, six hundred eighty-eight million, one hundred forty-seven thousand, one hundred eighty-seven".