68008750409 has 2 divisors, whose sum is σ = 68008750410. Its totient is φ = 68008750408.

The previous prime is 68008750363. The next prime is 68008750441. The reversal of 68008750409 is 90405780086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65345674384 + 2663076025 = 255628^2 + 51605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68008750409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (68008750009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34004375204 + 34004375205.

It is an arithmetic number, because the mean of its divisors is an integer number (34004375205).

Almost surely, 2^68008750409 is an apocalyptic number.

It is an amenable number.

68008750409 is a deficient number, since it is larger than the sum of its proper divisors (1).

68008750409 is an equidigital number, since it uses as much as digits as its factorization.

68008750409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 68008750409 in words is "sixty-eight billion, eight million, seven hundred fifty thousand, four hundred nine".