263840941634713 has 2 divisors, whose sum is σ = 263840941634714. Its totient is φ = 263840941634712.

The previous prime is 263840941634623. The next prime is 263840941634717. The reversal of 263840941634713 is 317436149048362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137129065084944 + 126711876549769 = 11710212^2 + 11256637^2 .

It is a cyclic number.

It is not a de Polignac number, because 263840941634713 - 2⁴⁵ = 228656569545881 is a prime.

It is a super-2 number, since 2×263840941634713² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (263840941634717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131920470817356 + 131920470817357.

It is an arithmetic number, because the mean of its divisors is an integer number (131920470817357).

Almost surely, 2^{263840941634713} is an apocalyptic number.

It is an amenable number.

263840941634713 is a deficient number, since it is larger than the sum of its proper divisors (1).

263840941634713 is an equidigital number, since it uses as much as digits as its factorization.

263840941634713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62705664, while the sum is 61.

The spelling of 263840941634713 in words is "two hundred sixty-three trillion, eight hundred forty billion, nine hundred forty-one million, six hundred thirty-four thousand, seven hundred thirteen".