12515051543 has 2 divisors, whose sum is σ = 12515051544. Its totient is φ = 12515051542.

The previous prime is 12515051459. The next prime is 12515051561. The reversal of 12515051543 is 34515051521.

12515051543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12515051543 - 2⁸ = 12515051287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12515057543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257525771 + 6257525772.

It is an arithmetic number, because the mean of its divisors is an integer number (6257525772).

Almost surely, 2^12515051543 is an apocalyptic number.

12515051543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12515051543 is an equidigital number, since it uses as much as digits as its factorization.

12515051543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 12515051543 in words is "twelve billion, five hundred fifteen million, fifty-one thousand, five hundred forty-three".