12636530623 has 2 divisors, whose sum is σ = 12636530624. Its totient is φ = 12636530622.

The previous prime is 12636530611. The next prime is 12636530629. The reversal of 12636530623 is 32603563621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12636530623 - 2³³ = 4046596031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12636530629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318265311 + 6318265312.

It is an arithmetic number, because the mean of its divisors is an integer number (6318265312).

Almost surely, 2^12636530623 is an apocalyptic number.

12636530623 is a deficient number, since it is larger than the sum of its proper divisors (1).

12636530623 is an equidigital number, since it uses as much as digits as its factorization.

12636530623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 37.

The spelling of 12636530623 in words is "twelve billion, six hundred thirty-six million, five hundred thirty thousand, six hundred twenty-three".