12541216651 has 2 divisors, whose sum is σ = 12541216652. Its totient is φ = 12541216650.

The previous prime is 12541216607. The next prime is 12541216669. The reversal of 12541216651 is 15661214521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12541216651 - 2⁹ = 12541216139 is a prime.

It is not a weakly prime, because it can be changed into another prime (12541216151) 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, 6270608325 + 6270608326.

It is an arithmetic number, because the mean of its divisors is an integer number (6270608326).

Almost surely, 2^12541216651 is an apocalyptic number.

12541216651 is a deficient number, since it is larger than the sum of its proper divisors (1).

12541216651 is an equidigital number, since it uses as much as digits as its factorization.

12541216651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 34.

The spelling of 12541216651 in words is "twelve billion, five hundred forty-one million, two hundred sixteen thousand, six hundred fifty-one".