805530013281 has 24 divisors (see below), whose sum is σ = 1330871170304. Its totient is φ = 459919555200.

The previous prime is 805530013241. The next prime is 805530013297. The reversal of 805530013281 is 182310035508.

805530013281 is a `hidden beast` number, since 80 + 553 + 0 + 0 + 1 + 3 + 28 + 1 = 666.

805530013281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 805530013281 - 2⁶ = 805530013217 is a prime.

It is a super-2 number, since 2×805530013281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805530013241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5247481 + ... + 5398806.

Almost surely, 2^805530013281 is an apocalyptic number.

It is an amenable number.

805530013281 is a deficient number, since it is larger than the sum of its proper divisors (525341157023).

805530013281 is a wasteful number, since it uses less digits than its factorization.

805530013281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10647501 (or 10647498 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

Adding to 805530013281 its reverse (182310035508), we get a palindrome (987840048789).

The spelling of 805530013281 in words is "eight hundred five billion, five hundred thirty million, thirteen thousand, two hundred eighty-one".