38678880643828 has 6 divisors (see below), whose sum is σ = 67688041126706. Its totient is φ = 19339440321912.

The previous prime is 38678880643759. The next prime is 38678880643829. The reversal of 38678880643828 is 82834608887683.

38678880643828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35661774175504 + 3017106468324 = 5971748^2 + 1736982^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38678880643829) 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, 4834860080475 + ... + 4834860080482.

Almost surely, 2^{38678880643828} is an apocalyptic number.

It is an amenable number.

38678880643828 is a deficient number, since it is larger than the sum of its proper divisors (29009160482878).

38678880643828 is a wasteful number, since it uses less digits than its factorization.

38678880643828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9669720160961 (or 9669720160959 counting only the distinct ones).

The product of its (nonzero) digits is 4756340736, while the sum is 79.

The spelling of 38678880643828 in words is "thirty-eight trillion, six hundred seventy-eight billion, eight hundred eighty million, six hundred forty-three thousand, eight hundred twenty-eight".