26659705243 has 2 divisors, whose sum is σ = 26659705244. Its totient is φ = 26659705242.

The previous prime is 26659705229. The next prime is 26659705343. The reversal of 26659705243 is 34250795662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26659705243 - 2⁵ = 26659705211 is a prime.

It is not a weakly prime, because it can be changed into another prime (26659705223) 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, 13329852621 + 13329852622.

It is an arithmetic number, because the mean of its divisors is an integer number (13329852622).

Almost surely, 2^26659705243 is an apocalyptic number.

26659705243 is a deficient number, since it is larger than the sum of its proper divisors (1).

26659705243 is an equidigital number, since it uses as much as digits as its factorization.

26659705243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 26659705243 in words is "twenty-six billion, six hundred fifty-nine million, seven hundred five thousand, two hundred forty-three".