67651067689 has 2 divisors, whose sum is σ = 67651067690. Its totient is φ = 67651067688.

The previous prime is 67651067657. The next prime is 67651067699. The reversal of 67651067689 is 98676015676.

67651067689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61325569600 + 6325498089 = 247640^2 + 79533^2 .

It is a cyclic number.

It is not a de Polignac number, because 67651067689 - 2⁵ = 67651067657 is a prime.

It is not a weakly prime, because it can be changed into another prime (67651067629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33825533844 + 33825533845.

It is an arithmetic number, because the mean of its divisors is an integer number (33825533845).

Almost surely, 2^67651067689 is an apocalyptic number.

It is an amenable number.

67651067689 is a deficient number, since it is larger than the sum of its proper divisors (1).

67651067689 is an equidigital number, since it uses as much as digits as its factorization.

67651067689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22861440, while the sum is 61.

The spelling of 67651067689 in words is "sixty-seven billion, six hundred fifty-one million, sixty-seven thousand, six hundred eighty-nine".