26268842513 has 2 divisors, whose sum is σ = 26268842514. Its totient is φ = 26268842512.

The previous prime is 26268842503. The next prime is 26268842519. The reversal of 26268842513 is 31524886262.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22497900049 + 3770942464 = 149993^2 + 61408^2 .

It is a cyclic number.

It is not a de Polignac number, because 26268842513 - 2⁴ = 26268842497 is a prime.

It is not a weakly prime, because it can be changed into another prime (26268842519) 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, 13134421256 + 13134421257.

It is an arithmetic number, because the mean of its divisors is an integer number (13134421257).

Almost surely, 2^26268842513 is an apocalyptic number.

It is an amenable number.

26268842513 is a deficient number, since it is larger than the sum of its proper divisors (1).

26268842513 is an equidigital number, since it uses as much as digits as its factorization.

26268842513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1105920, while the sum is 47.

The spelling of 26268842513 in words is "twenty-six billion, two hundred sixty-eight million, eight hundred forty-two thousand, five hundred thirteen".