26146622664109 has 2 divisors, whose sum is σ = 26146622664110. Its totient is φ = 26146622664108.

The previous prime is 26146622664091. The next prime is 26146622664179. The reversal of 26146622664109 is 90146622664162.

Together with previous prime (26146622664091) 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., 15983980012009 + 10162642652100 = 3997997^2 + 3187890^2 .

It is a cyclic number.

It is not a de Polignac number, because 26146622664109 - 2³³ = 26138032729517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26146622664109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26146622664179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13073311332054 + 13073311332055.

It is an arithmetic number, because the mean of its divisors is an integer number (13073311332055).

Almost surely, 2^{26146622664109} is an apocalyptic number.

It is an amenable number.

26146622664109 is a deficient number, since it is larger than the sum of its proper divisors (1).

26146622664109 is an equidigital number, since it uses as much as digits as its factorization.

26146622664109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 55.

The spelling of 26146622664109 in words is "twenty-six trillion, one hundred forty-six billion, six hundred twenty-two million, six hundred sixty-four thousand, one hundred nine".