26539245613 has 2 divisors, whose sum is σ = 26539245614. Its totient is φ = 26539245612.

The previous prime is 26539245583. The next prime is 26539245643. The reversal of 26539245613 is 31654293562.

It is a balanced prime because it is at equal distance from previous prime (26539245583) and next prime (26539245643).

It can be written as a sum of positive squares in only one way, i.e., 25287996484 + 1251249129 = 159022^2 + 35373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26539245613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26539245643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13269622806 + 13269622807.

It is an arithmetic number, because the mean of its divisors is an integer number (13269622807).

Almost surely, 2^26539245613 is an apocalyptic number.

It is an amenable number.

26539245613 is a deficient number, since it is larger than the sum of its proper divisors (1).

26539245613 is an equidigital number, since it uses as much as digits as its factorization.

26539245613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 46.

The spelling of 26539245613 in words is "twenty-six billion, five hundred thirty-nine million, two hundred forty-five thousand, six hundred thirteen".