12115506587 has 2 divisors, whose sum is σ = 12115506588. Its totient is φ = 12115506586.

The previous prime is 12115506563. The next prime is 12115506629. The reversal of 12115506587 is 78560551121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12115506587 - 2³⁰ = 11041764763 is a prime.

It is not a weakly prime, because it can be changed into another prime (12115506547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6057753293 + 6057753294.

It is an arithmetic number, because the mean of its divisors is an integer number (6057753294).

Almost surely, 2^12115506587 is an apocalyptic number.

12115506587 is a deficient number, since it is larger than the sum of its proper divisors (1).

12115506587 is an equidigital number, since it uses as much as digits as its factorization.

12115506587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84000, while the sum is 41.

The spelling of 12115506587 in words is "twelve billion, one hundred fifteen million, five hundred six thousand, five hundred eighty-seven".