26261640324847 has 2 divisors, whose sum is σ = 26261640324848. Its totient is φ = 26261640324846.

The previous prime is 26261640324811. The next prime is 26261640324943. The reversal of 26261640324847 is 74842304616262.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26261640324847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26261640304847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13130820162423 + 13130820162424.

It is an arithmetic number, because the mean of its divisors is an integer number (13130820162424).

Almost surely, 2^{26261640324847} is an apocalyptic number.

26261640324847 is a deficient number, since it is larger than the sum of its proper divisors (1).

26261640324847 is an equidigital number, since it uses as much as digits as its factorization.

26261640324847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18579456, while the sum is 55.

The spelling of 26261640324847 in words is "twenty-six trillion, two hundred sixty-one billion, six hundred forty million, three hundred twenty-four thousand, eight hundred forty-seven".