26364234517 has 2 divisors, whose sum is σ = 26364234518. Its totient is φ = 26364234516.

The previous prime is 26364234509. The next prime is 26364234527. The reversal of 26364234517 is 71543246362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25853745681 + 510488836 = 160791^2 + 22594^2 .

It is a cyclic number.

It is not a de Polignac number, because 26364234517 - 2³ = 26364234509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26364234527) 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, 13182117258 + 13182117259.

It is an arithmetic number, because the mean of its divisors is an integer number (13182117259).

Almost surely, 2^26364234517 is an apocalyptic number.

It is an amenable number.

26364234517 is a deficient number, since it is larger than the sum of its proper divisors (1).

26364234517 is an equidigital number, since it uses as much as digits as its factorization.

26364234517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 43.

The spelling of 26364234517 in words is "twenty-six billion, three hundred sixty-four million, two hundred thirty-four thousand, five hundred seventeen".