5286521788681 has 16 divisors (see below), whose sum is σ = 6165225590400. Its totient is φ = 4531167972240.

The previous prime is 5286521788627. The next prime is 5286521788687. The reversal of 5286521788681 is 1868871256825.

It is not a de Polignac number, because 5286521788681 - 2¹⁵ = 5286521755913 is a prime.

It is a super-2 number, since 2×5286521788681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5286521788687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12137775 + ... + 12565771.

It is an arithmetic number, because the mean of its divisors is an integer number (385326599400).

Almost surely, 2^{5286521788681} is an apocalyptic number.

It is an amenable number.

5286521788681 is a deficient number, since it is larger than the sum of its proper divisors (878703801719).

5286521788681 is an equidigital number, since it uses as much as digits as its factorization.

5286521788681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464029 (or 464015 counting only the distinct ones).

The product of its digits is 103219200, while the sum is 67.

The spelling of 5286521788681 in words is "five trillion, two hundred eighty-six billion, five hundred twenty-one million, seven hundred eighty-eight thousand, six hundred eighty-one".