12636530611 has 2 divisors, whose sum is σ = 12636530612. Its totient is φ = 12636530610.

The previous prime is 12636530609. The next prime is 12636530623. The reversal of 12636530611 is 11603563621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12636530611 - 2¹ = 12636530609 is a prime.

Together with 12636530609, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12636539611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318265305 + 6318265306.

It is an arithmetic number, because the mean of its divisors is an integer number (6318265306).

Almost surely, 2^12636530611 is an apocalyptic number.

12636530611 is a deficient number, since it is larger than the sum of its proper divisors (1).

12636530611 is an equidigital number, since it uses as much as digits as its factorization.

12636530611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 12636530611 in words is "twelve billion, six hundred thirty-six million, five hundred thirty thousand, six hundred eleven".