12640241532937 has 2 divisors, whose sum is σ = 12640241532938. Its totient is φ = 12640241532936.

The previous prime is 12640241532913. The next prime is 12640241532991. The reversal of 12640241532937 is 73923514204621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7365231498816 + 5275010034121 = 2713896^2 + 2296739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12640241532937 is a prime.

It is not a weakly prime, because it can be changed into another prime (12640241532137) 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, 6320120766468 + 6320120766469.

It is an arithmetic number, because the mean of its divisors is an integer number (6320120766469).

Almost surely, 2^{12640241532937} is an apocalyptic number.

It is an amenable number.

12640241532937 is a deficient number, since it is larger than the sum of its proper divisors (1).

12640241532937 is an equidigital number, since it uses as much as digits as its factorization.

12640241532937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 12640241532937 in words is "twelve trillion, six hundred forty billion, two hundred forty-one million, five hundred thirty-two thousand, nine hundred thirty-seven".