13256640611 has 2 divisors, whose sum is σ = 13256640612. Its totient is φ = 13256640610.

The previous prime is 13256640587. The next prime is 13256640629. The reversal of 13256640611 is 11604665231.

It is a strong prime.

It is an emirp because it is prime and its reverse (11604665231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13256640611 - 2²² = 13252446307 is a prime.

It is not a weakly prime, because it can be changed into another prime (13256640671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6628320305 + 6628320306.

It is an arithmetic number, because the mean of its divisors is an integer number (6628320306).

Almost surely, 2^13256640611 is an apocalyptic number.

13256640611 is a deficient number, since it is larger than the sum of its proper divisors (1).

13256640611 is an equidigital number, since it uses as much as digits as its factorization.

13256640611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 13256640611 in words is "thirteen billion, two hundred fifty-six million, six hundred forty thousand, six hundred eleven".