12663520487 has 2 divisors, whose sum is σ = 12663520488. Its totient is φ = 12663520486.

The previous prime is 12663520469. The next prime is 12663520559. The reversal of 12663520487 is 78402536621.

It is a weak prime.

It is an emirp because it is prime and its reverse (78402536621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12663520487 - 2⁶ = 12663520423 is a prime.

It is a super-2 number, since 2×12663520487² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12663520417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6331760243 + 6331760244.

It is an arithmetic number, because the mean of its divisors is an integer number (6331760244).

Almost surely, 2^12663520487 is an apocalyptic number.

12663520487 is a deficient number, since it is larger than the sum of its proper divisors (1).

12663520487 is an equidigital number, since it uses as much as digits as its factorization.

12663520487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 12663520487 in words is "twelve billion, six hundred sixty-three million, five hundred twenty thousand, four hundred eighty-seven".