68376545689 has 2 divisors, whose sum is σ = 68376545690. Its totient is φ = 68376545688.

The previous prime is 68376545641. The next prime is 68376545711. The reversal of 68376545689 is 98654567386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61196864400 + 7179681289 = 247380^2 + 84733^2 .

It is a cyclic number.

It is not a de Polignac number, because 68376545689 - 2⁹ = 68376545177 is a prime.

It is not a weakly prime, because it can be changed into another prime (68376545609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34188272844 + 34188272845.

It is an arithmetic number, because the mean of its divisors is an integer number (34188272845).

Almost surely, 2^68376545689 is an apocalyptic number.

It is an amenable number.

68376545689 is a deficient number, since it is larger than the sum of its proper divisors (1).

68376545689 is an equidigital number, since it uses as much as digits as its factorization.

68376545689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 261273600, while the sum is 67.

The spelling of 68376545689 in words is "sixty-eight billion, three hundred seventy-six million, five hundred forty-five thousand, six hundred eighty-nine".