6820300685881 has 4 divisors (see below), whose sum is σ = 7221494843892. Its totient is φ = 6419106527872.

The previous prime is 6820300685873. The next prime is 6820300685903. The reversal of 6820300685881 is 1885860030286.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2737237891600 + 4083062794281 = 1654460^2 + 2020659^2 .

It is a cyclic number.

It is not a de Polignac number, because 6820300685881 - 2³ = 6820300685873 is a prime.

It is a super-2 number, since 2×6820300685881² (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 (6820300685281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200597078980 + ... + 200597079013.

It is an arithmetic number, because the mean of its divisors is an integer number (1805373710973).

Almost surely, 2^{6820300685881} is an apocalyptic number.

It is an amenable number.

6820300685881 is a deficient number, since it is larger than the sum of its proper divisors (401194158011).

6820300685881 is a wasteful number, since it uses less digits than its factorization.

6820300685881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401194158010.

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 6820300685881 in words is "six trillion, eight hundred twenty billion, three hundred million, six hundred eighty-five thousand, eight hundred eighty-one".