38856663188921 has 12 divisors (see below), whose sum is σ = 42360790602000. Its totient is φ = 35542210960368.

The previous prime is 38856663188867. The next prime is 38856663188951. The reversal of 38856663188921 is 12988136665883.

38856663188921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38856663188921 - 2¹⁰ = 38856663187897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38856663188951) 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 in 11 ways as a sum of consecutive naturals, for example, 1215850571 + ... + 1215882528.

It is an arithmetic number, because the mean of its divisors is an integer number (3530065883500).

Almost surely, 2^{38856663188921} is an apocalyptic number.

It is an amenable number.

38856663188921 is a deficient number, since it is larger than the sum of its proper divisors (3504127413079).

38856663188921 is a wasteful number, since it uses less digits than its factorization.

38856663188921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431733176 (or 2431733147 counting only the distinct ones).

The product of its digits is 716636160, while the sum is 74.

The spelling of 38856663188921 in words is "thirty-eight trillion, eight hundred fifty-six billion, six hundred sixty-three million, one hundred eighty-eight thousand, nine hundred twenty-one".