26360643316613 has 2 divisors, whose sum is σ = 26360643316614. Its totient is φ = 26360643316612.

The previous prime is 26360643316571. The next prime is 26360643316621. The reversal of 26360643316613 is 31661334606362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20639639489569 + 5721003827044 = 4543087^2 + 2391862^2 .

It is a cyclic number.

It is not a de Polignac number, because 26360643316613 - 2⁶ = 26360643316549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26360643316643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13180321658306 + 13180321658307.

It is an arithmetic number, because the mean of its divisors is an integer number (13180321658307).

Almost surely, 2^{26360643316613} is an apocalyptic number.

It is an amenable number.

26360643316613 is a deficient number, since it is larger than the sum of its proper divisors (1).

26360643316613 is an equidigital number, since it uses as much as digits as its factorization.

26360643316613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 50.

The spelling of 26360643316613 in words is "twenty-six trillion, three hundred sixty billion, six hundred forty-three million, three hundred sixteen thousand, six hundred thirteen".