6812916281 has 8 divisors (see below), whose sum is σ = 6826650600. Its totient is φ = 6799196160.

The previous prime is 6812916223. The next prime is 6812916337. The reversal of 6812916281 is 1826192186.

6812916281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4086405625 + 2726510656 = 63925^2 + 52216^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6812916281 - 2³⁰ = 5739174457 is a prime.

It is a super-2 number, since 2×6812916281² = 92831656503829741922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6812916581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604321 + ... + 1608561.

It is an arithmetic number, because the mean of its divisors is an integer number (853331325).

Almost surely, 2^6812916281 is an apocalyptic number.

It is an amenable number.

6812916281 is a deficient number, since it is larger than the sum of its proper divisors (13734319).

6812916281 is a wasteful number, since it uses less digits than its factorization.

6812916281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7099.

The product of its digits is 82944, while the sum is 44.

The square root of 6812916281 is about 82540.3918151592. The cubic root of 6812916281 is about 1895.7352434090.

The spelling of 6812916281 in words is "six billion, eight hundred twelve million, nine hundred sixteen thousand, two hundred eighty-one".