5286243909781 has 2 divisors, whose sum is σ = 5286243909782. Its totient is φ = 5286243909780.

The previous prime is 5286243909707. The next prime is 5286243909799. The reversal of 5286243909781 is 1879093426825.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4303239080625 + 983004829156 = 2074425^2 + 991466^2 .

It is a cyclic number.

It is not a de Polignac number, because 5286243909781 - 2²¹ = 5286241812629 is a prime.

It is a super-2 number, since 2×5286243909781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5286243909701) 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, 2643121954890 + 2643121954891.

It is an arithmetic number, because the mean of its divisors is an integer number (2643121954891).

It is a 1-persistent number, because it is pandigital, but 2⋅5286243909781 = 10572487819562 is not.

Almost surely, 2^{5286243909781} is an apocalyptic number.

It is an amenable number.

5286243909781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5286243909781 is an equidigital number, since it uses as much as digits as its factorization.

5286243909781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 5286243909781 in words is "five trillion, two hundred eighty-six billion, two hundred forty-three million, nine hundred nine thousand, seven hundred eighty-one".