5285500039681 has 2 divisors, whose sum is σ = 5285500039682. Its totient is φ = 5285500039680.

The previous prime is 5285500039667. The next prime is 5285500039717. The reversal of 5285500039681 is 1869300055825.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5211134749681 + 74365290000 = 2282791^2 + 272700^2 .

It is a cyclic number.

It is not a de Polignac number, because 5285500039681 - 2¹⁷ = 5285499908609 is a prime.

It is a super-4 number, since 4×5285500039681⁴ (a number of 52 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (5285500039621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2642750019840 + 2642750019841.

It is an arithmetic number, because the mean of its divisors is an integer number (2642750019841).

Almost surely, 2^{5285500039681} is an apocalyptic number.

It is an amenable number.

5285500039681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5285500039681 is an equidigital number, since it uses as much as digits as its factorization.

5285500039681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 52.

The spelling of 5285500039681 in words is "five trillion, two hundred eighty-five billion, five hundred million, thirty-nine thousand, six hundred eighty-one".