39664646603 has 2 divisors, whose sum is σ = 39664646604. Its totient is φ = 39664646602.

The previous prime is 39664646569. The next prime is 39664646621. The reversal of 39664646603 is 30664646693.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39664646603 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (39664646663) 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, 19832323301 + 19832323302.

It is an arithmetic number, because the mean of its divisors is an integer number (19832323302).

Almost surely, 2^39664646603 is an apocalyptic number.

39664646603 is a deficient number, since it is larger than the sum of its proper divisors (1).

39664646603 is an equidigital number, since it uses as much as digits as its factorization.

39664646603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10077696, while the sum is 53.

The spelling of 39664646603 in words is "thirty-nine billion, six hundred sixty-four million, six hundred forty-six thousand, six hundred three".