26363811809 has 2 divisors, whose sum is σ = 26363811810. Its totient is φ = 26363811808.

The previous prime is 26363811791. The next prime is 26363811827. The reversal of 26363811809 is 90811836362.

It is a balanced prime because it is at equal distance from previous prime (26363811791) and next prime (26363811827).

It can be written as a sum of positive squares in only one way, i.e., 26350379584 + 13432225 = 162328^2 + 3665^2 .

It is a cyclic number.

It is not a de Polignac number, because 26363811809 - 2²⁸ = 26095376353 is a prime.

It is not a weakly prime, because it can be changed into another prime (26363811899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13181905904 + 13181905905.

It is an arithmetic number, because the mean of its divisors is an integer number (13181905905).

Almost surely, 2^26363811809 is an apocalyptic number.

It is an amenable number.

26363811809 is a deficient number, since it is larger than the sum of its proper divisors (1).

26363811809 is an equidigital number, since it uses as much as digits as its factorization.

26363811809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 26363811809 in words is "twenty-six billion, three hundred sixty-three million, eight hundred eleven thousand, eight hundred nine".