26418089565121 has 2 divisors, whose sum is σ = 26418089565122. Its totient is φ = 26418089565120.

The previous prime is 26418089565107. The next prime is 26418089565137. The reversal of 26418089565121 is 12156598081462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19339105640625 + 7078983924496 = 4397625^2 + 2660636^2 .

It is a cyclic number.

It is not a de Polignac number, because 26418089565121 - 2⁹ = 26418089564609 is a prime.

It is not a weakly prime, because it can be changed into another prime (26418089535121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13209044782560 + 13209044782561.

It is an arithmetic number, because the mean of its divisors is an integer number (13209044782561).

Almost surely, 2^{26418089565121} is an apocalyptic number.

It is an amenable number.

26418089565121 is a deficient number, since it is larger than the sum of its proper divisors (1).

26418089565121 is an equidigital number, since it uses as much as digits as its factorization.

26418089565121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8294400, while the sum is 58.

The spelling of 26418089565121 in words is "twenty-six trillion, four hundred eighteen billion, eighty-nine million, five hundred sixty-five thousand, one hundred twenty-one".