6681013043 has 2 divisors, whose sum is σ = 6681013044. Its totient is φ = 6681013042.

The previous prime is 6681012991. The next prime is 6681013049. The reversal of 6681013043 is 3403101866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6681013043 - 2⁶ = 6681012979 is a prime.

It is a super-2 number, since 2×6681013043² = 89271870561472239698, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6681013049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340506521 + 3340506522.

It is an arithmetic number, because the mean of its divisors is an integer number (3340506522).

Almost surely, 2^6681013043 is an apocalyptic number.

6681013043 is a deficient number, since it is larger than the sum of its proper divisors (1).

6681013043 is an equidigital number, since it uses as much as digits as its factorization.

6681013043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 6681013043 is about 81737.4641336517. The cubic root of 6681013043 is about 1883.4211362063.

The spelling of 6681013043 in words is "six billion, six hundred eighty-one million, thirteen thousand, forty-three".