68624600089 has 2 divisors, whose sum is σ = 68624600090. Its totient is φ = 68624600088.

The previous prime is 68624600069. The next prime is 68624600117. The reversal of 68624600089 is 98000642686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65284338064 + 3340262025 = 255508^2 + 57795^2 .

It is a cyclic number.

It is not a de Polignac number, because 68624600089 - 2⁹ = 68624599577 is a prime.

It is not a weakly prime, because it can be changed into another prime (68624600039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34312300044 + 34312300045.

It is an arithmetic number, because the mean of its divisors is an integer number (34312300045).

Almost surely, 2^68624600089 is an apocalyptic number.

It is an amenable number.

68624600089 is a deficient number, since it is larger than the sum of its proper divisors (1).

68624600089 is an equidigital number, since it uses as much as digits as its factorization.

68624600089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 68624600089 in words is "sixty-eight billion, six hundred twenty-four million, six hundred thousand, eighty-nine".