12640281053 has 2 divisors, whose sum is σ = 12640281054. Its totient is φ = 12640281052.

The previous prime is 12640281019. The next prime is 12640281079. The reversal of 12640281053 is 35018204621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12637806724 + 2474329 = 112418^2 + 1573^2 .

It is a cyclic number.

It is not a de Polignac number, because 12640281053 - 2¹⁴ = 12640264669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12640281083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320140526 + 6320140527.

It is an arithmetic number, because the mean of its divisors is an integer number (6320140527).

Almost surely, 2^12640281053 is an apocalyptic number.

It is an amenable number.

12640281053 is a deficient number, since it is larger than the sum of its proper divisors (1).

12640281053 is an equidigital number, since it uses as much as digits as its factorization.

12640281053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 12640281053 its reverse (35018204621), we get a palindrome (47658485674).

The spelling of 12640281053 in words is "twelve billion, six hundred forty million, two hundred eighty-one thousand, fifty-three".