26205943807 has 2 divisors, whose sum is σ = 26205943808. Its totient is φ = 26205943806.

The previous prime is 26205943783. The next prime is 26205943811. The reversal of 26205943807 is 70834950262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26205943807 - 2³¹ = 24058460159 is a prime.

It is the 161883-rd Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26205943007) by changing a digit.

It is a nontrivial repunit in base 161882.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13102971903 + 13102971904.

It is an arithmetic number, because the mean of its divisors is an integer number (13102971904).

Almost surely, 2^26205943807 is an apocalyptic number.

26205943807 is a deficient number, since it is larger than the sum of its proper divisors (1).

26205943807 is an equidigital number, since it uses as much as digits as its factorization.

26205943807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 26205943807 in words is "twenty-six billion, two hundred five million, nine hundred forty-three thousand, eight hundred seven".