26012088217 has 2 divisors, whose sum is σ = 26012088218. Its totient is φ = 26012088216.

The previous prime is 26012088163. The next prime is 26012088239. The reversal of 26012088217 is 71288021062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20762216281 + 5249871936 = 144091^2 + 72456^2 .

It is a cyclic number.

It is not a de Polignac number, because 26012088217 - 2¹¹ = 26012086169 is a prime.

It is not a weakly prime, because it can be changed into another prime (26012088247) 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, 13006044108 + 13006044109.

It is an arithmetic number, because the mean of its divisors is an integer number (13006044109).

Almost surely, 2^26012088217 is an apocalyptic number.

It is an amenable number.

26012088217 is a deficient number, since it is larger than the sum of its proper divisors (1).

26012088217 is an equidigital number, since it uses as much as digits as its factorization.

26012088217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 26012088217 in words is "twenty-six billion, twelve million, eighty-eight thousand, two hundred seventeen".