26205943811 has 2 divisors, whose sum is σ = 26205943812. Its totient is φ = 26205943810.

The previous prime is 26205943807. The next prime is 26205943903. The reversal of 26205943811 is 11834950262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26205943811 - 2² = 26205943807 is a prime.

It is not a weakly prime, because it can be changed into another prime (26205903811) 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, 13102971905 + 13102971906.

It is an arithmetic number, because the mean of its divisors is an integer number (13102971906).

Almost surely, 2^26205943811 is an apocalyptic number.

26205943811 is a deficient number, since it is larger than the sum of its proper divisors (1).

26205943811 is an equidigital number, since it uses as much as digits as its factorization.

26205943811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 26205943811 in words is "twenty-six billion, two hundred five million, nine hundred forty-three thousand, eight hundred eleven".