38856663189629 has 2 divisors, whose sum is σ = 38856663189630. Its totient is φ = 38856663189628.

The previous prime is 38856663189607. The next prime is 38856663189649. The reversal of 38856663189629 is 92698136665883.

38856663189629 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., 38694906393529 + 161756796100 = 6220523^2 + 402190^2 .

It is a cyclic number.

It is not a de Polignac number, because 38856663189629 - 2³⁶ = 38787943712893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38856663189649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19428331594814 + 19428331594815.

It is an arithmetic number, because the mean of its divisors is an integer number (19428331594815).

Almost surely, 2^{38856663189629} is an apocalyptic number.

It is an amenable number.

38856663189629 is a deficient number, since it is larger than the sum of its proper divisors (1).

38856663189629 is an equidigital number, since it uses as much as digits as its factorization.

38856663189629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4837294080, while the sum is 80.

The spelling of 38856663189629 in words is "thirty-eight trillion, eight hundred fifty-six billion, six hundred sixty-three million, one hundred eighty-nine thousand, six hundred twenty-nine".