6687033256643 has 2 divisors, whose sum is σ = 6687033256644. Its totient is φ = 6687033256642.

The previous prime is 6687033256637. The next prime is 6687033256697. The reversal of 6687033256643 is 3466523307866.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6687033256643 - 2¹⁰ = 6687033255619 is a prime.

It is not a weakly prime, because it can be changed into another prime (6687033256613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3343516628321 + 3343516628322.

It is an arithmetic number, because the mean of its divisors is an integer number (3343516628322).

Almost surely, 2^{6687033256643} is an apocalyptic number.

6687033256643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6687033256643 is an equidigital number, since it uses as much as digits as its factorization.

6687033256643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78382080, while the sum is 59.

The spelling of 6687033256643 in words is "six trillion, six hundred eighty-seven billion, thirty-three million, two hundred fifty-six thousand, six hundred forty-three".