38678403566723 has 2 divisors, whose sum is σ = 38678403566724. Its totient is φ = 38678403566722.

The previous prime is 38678403566717. The next prime is 38678403566807. The reversal of 38678403566723 is 32766530487683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38678403566723 - 2⁴ = 38678403566707 is a prime.

It is not a weakly prime, because it can be changed into another prime (38678403566123) 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, 19339201783361 + 19339201783362.

It is an arithmetic number, because the mean of its divisors is an integer number (19339201783362).

Almost surely, 2^{38678403566723} is an apocalyptic number.

38678403566723 is a deficient number, since it is larger than the sum of its proper divisors (1).

38678403566723 is an equidigital number, since it uses as much as digits as its factorization.

38678403566723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 731566080, while the sum is 68.

The spelling of 38678403566723 in words is "thirty-eight trillion, six hundred seventy-eight billion, four hundred three million, five hundred sixty-six thousand, seven hundred twenty-three".