38768444647 has 2 divisors, whose sum is σ = 38768444648. Its totient is φ = 38768444646.

The previous prime is 38768444629. The next prime is 38768444779. The reversal of 38768444647 is 74644486783.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38768444647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38768444147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19384222323 + 19384222324.

It is an arithmetic number, because the mean of its divisors is an integer number (19384222324).

Almost surely, 2^38768444647 is an apocalyptic number.

38768444647 is a deficient number, since it is larger than the sum of its proper divisors (1).

38768444647 is an equidigital number, since it uses as much as digits as its factorization.

38768444647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86704128, while the sum is 61.

The spelling of 38768444647 in words is "thirty-eight billion, seven hundred sixty-eight million, four hundred forty-four thousand, six hundred forty-seven".