12640241533027 has 2 divisors, whose sum is σ = 12640241533028. Its totient is φ = 12640241533026.

The previous prime is 12640241532991. The next prime is 12640241533069. The reversal of 12640241533027 is 72033514204621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12640241533027 is a prime.

It is not a weakly prime, because it can be changed into another prime (12640241533327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320120766513 + 6320120766514.

It is an arithmetic number, because the mean of its divisors is an integer number (6320120766514).

Almost surely, 2^{12640241533027} is an apocalyptic number.

12640241533027 is a deficient number, since it is larger than the sum of its proper divisors (1).

12640241533027 is an equidigital number, since it uses as much as digits as its factorization.

12640241533027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 40.

Adding to 12640241533027 its reverse (72033514204621), we get a palindrome (84673755737648).

The spelling of 12640241533027 in words is "twelve trillion, six hundred forty billion, two hundred forty-one million, five hundred thirty-three thousand, twenty-seven".