26542102218791 has 2 divisors, whose sum is σ = 26542102218792. Its totient is φ = 26542102218790.

The previous prime is 26542102218773. The next prime is 26542102218847. The reversal of 26542102218791 is 19781220124562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26542102218791 - 2¹⁸ = 26542101956647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26542102218491) 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, 13271051109395 + 13271051109396.

It is an arithmetic number, because the mean of its divisors is an integer number (13271051109396).

Almost surely, 2^{26542102218791} is an apocalyptic number.

26542102218791 is a deficient number, since it is larger than the sum of its proper divisors (1).

26542102218791 is an equidigital number, since it uses as much as digits as its factorization.

26542102218791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 26542102218791 in words is "twenty-six trillion, five hundred forty-two billion, one hundred two million, two hundred eighteen thousand, seven hundred ninety-one".