5281287807285 has 384 divisors, whose sum is σ = 11257050055680. Its totient is φ = 2239344672768.

The previous prime is 5281287807281. The next prime is 5281287807307. The reversal of 5281287807285 is 5827087821825.

5281287807285 is a `hidden beast` number, since 5 + 281 + 2 + 8 + 78 + 0 + 7 + 285 = 666.

It is not a de Polignac number, because 5281287807285 - 2² = 5281287807281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5281287807281) 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 in 383 ways as a sum of consecutive naturals, for example, 14158948359 + ... + 14158948731.

It is an arithmetic number, because the mean of its divisors is an integer number (29315234520).

Almost surely, 2^{5281287807285} is an apocalyptic number.

It is an amenable number.

5281287807285 is an abundant number, since it is smaller than the sum of its proper divisors (5975762248395).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5281287807285 is a wasteful number, since it uses less digits than its factorization.

5281287807285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 40140800, while the sum is 63.

The spelling of 5281287807285 in words is "five trillion, two hundred eighty-one billion, two hundred eighty-seven million, eight hundred seven thousand, two hundred eighty-five".