39680003609 has 2 divisors, whose sum is σ = 39680003610. Its totient is φ = 39680003608.

The previous prime is 39680003591. The next prime is 39680003611. The reversal of 39680003609 is 90630008693.

39680003609 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., 20875915225 + 18804088384 = 144485^2 + 137128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39680003609 is a prime.

It is a Sophie Germain prime.

Together with 39680003611, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39680003609.

It is not a weakly prime, because it can be changed into another prime (39680003509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19840001804 + 19840001805.

It is an arithmetic number, because the mean of its divisors is an integer number (19840001805).

Almost surely, 2^39680003609 is an apocalyptic number.

It is an amenable number.

39680003609 is a deficient number, since it is larger than the sum of its proper divisors (1).

39680003609 is an equidigital number, since it uses as much as digits as its factorization.

39680003609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 39680003609 in words is "thirty-nine billion, six hundred eighty million, three thousand, six hundred nine".