26116210661197 has 2 divisors, whose sum is σ = 26116210661198. Its totient is φ = 26116210661196.

The previous prime is 26116210661179. The next prime is 26116210661227. The reversal of 26116210661197 is 79116601261162.

Together with previous prime (26116210661179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24213938026756 + 1902272634441 = 4920766^2 + 1379229^2 .

It is a cyclic number.

It is not a de Polignac number, because 26116210661197 - 2¹⁹ = 26116210136909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26116210661197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26116210661297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13058105330598 + 13058105330599.

It is an arithmetic number, because the mean of its divisors is an integer number (13058105330599).

Almost surely, 2^{26116210661197} is an apocalyptic number.

It is an amenable number.

26116210661197 is a deficient number, since it is larger than the sum of its proper divisors (1).

26116210661197 is an equidigital number, since it uses as much as digits as its factorization.

26116210661197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 26116210661197 in words is "twenty-six trillion, one hundred sixteen billion, two hundred ten million, six hundred sixty-one thousand, one hundred ninety-seven".