6810003513081 has 12 divisors (see below), whose sum is σ = 9837746084452. Its totient is φ = 4539506491296.

The previous prime is 6810003513041. The next prime is 6810003513097. The reversal of 6810003513081 is 1803153000186.

6810003513081 is a `hidden beast` number, since 68 + 1 + 0 + 0 + 0 + 3 + 513 + 0 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4057871821056 + 2752131692025 = 2014416^2 + 1658955^2 .

It is not a de Polignac number, because 6810003513081 - 2²⁶ = 6809936404217 is a prime.

It is a super-2 number, since 2×6810003513081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6810003513011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41233906 + ... + 41398731.

Almost surely, 2^{6810003513081} is an apocalyptic number.

It is an amenable number.

6810003513081 is a deficient number, since it is larger than the sum of its proper divisors (3027742571371).

6810003513081 is a wasteful number, since it uses less digits than its factorization.

6810003513081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82641800 (or 82641797 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 6810003513081 in words is "six trillion, eight hundred ten billion, three million, five hundred thirteen thousand, eighty-one".