26208000397 has 2 divisors, whose sum is σ = 26208000398. Its totient is φ = 26208000396.

The previous prime is 26208000389. The next prime is 26208000433. The reversal of 26208000397 is 79300080262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18360521001 + 7847479396 = 135501^2 + 88586^2 .

It is a cyclic number.

It is not a de Polignac number, because 26208000397 - 2³ = 26208000389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26208000317) 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, 13104000198 + 13104000199.

It is an arithmetic number, because the mean of its divisors is an integer number (13104000199).

Almost surely, 2^26208000397 is an apocalyptic number.

It is an amenable number.

26208000397 is a deficient number, since it is larger than the sum of its proper divisors (1).

26208000397 is an equidigital number, since it uses as much as digits as its factorization.

26208000397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 26208000397 in words is "twenty-six billion, two hundred eight million, three hundred ninety-seven", and thus it is an aban number.