6681650123 has 2 divisors, whose sum is σ = 6681650124. Its totient is φ = 6681650122.

The previous prime is 6681650099. The next prime is 6681650149. The reversal of 6681650123 is 3210561866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6681650123 - 2⁸ = 6681649867 is a prime.

It is not a weakly prime, because it can be changed into another prime (6681652123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340825061 + 3340825062.

It is an arithmetic number, because the mean of its divisors is an integer number (3340825062).

Almost surely, 2^6681650123 is an apocalyptic number.

6681650123 is a deficient number, since it is larger than the sum of its proper divisors (1).

6681650123 is an equidigital number, since it uses as much as digits as its factorization.

6681650123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 6681650123 is about 81741.3611521120. The cubic root of 6681650123 is about 1883.4809999721.

The spelling of 6681650123 in words is "six billion, six hundred eighty-one million, six hundred fifty thousand, one hundred twenty-three".