27263256641 has 2 divisors, whose sum is σ = 27263256642. Its totient is φ = 27263256640.

The previous prime is 27263256611. The next prime is 27263256679. The reversal of 27263256641 is 14665236272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27198936241 + 64320400 = 164921^2 + 8020^2 .

It is a cyclic number.

It is not a de Polignac number, because 27263256641 - 2⁶ = 27263256577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27263256592 and 27263256601.

It is not a weakly prime, because it can be changed into another prime (27263256611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13631628320 + 13631628321.

It is an arithmetic number, because the mean of its divisors is an integer number (13631628321).

Almost surely, 2^27263256641 is an apocalyptic number.

It is an amenable number.

27263256641 is a deficient number, since it is larger than the sum of its proper divisors (1).

27263256641 is an equidigital number, since it uses as much as digits as its factorization.

27263256641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 44.

The spelling of 27263256641 in words is "twenty-seven billion, two hundred sixty-three million, two hundred fifty-six thousand, six hundred forty-one".