38428876381686 has 192 divisors, whose sum is σ = 93202181107200. Its totient is φ = 10335226890240.

The previous prime is 38428876381667. The next prime is 38428876381691. The reversal of 38428876381686 is 68618367882483.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3314828706 + ... + 3314840298.

It is an arithmetic number, because the mean of its divisors is an integer number (485428026600).

Almost surely, 2^{38428876381686} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38428876381686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46601090553600).

38428876381686 is an abundant number, since it is smaller than the sum of its proper divisors (54773304725514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38428876381686 is a wasteful number, since it uses less digits than its factorization.

38428876381686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13335 (or 13294 counting only the distinct ones).

The product of its digits is 3567255552, while the sum is 78.

The spelling of 38428876381686 in words is "thirty-eight trillion, four hundred twenty-eight billion, eight hundred seventy-six million, three hundred eighty-one thousand, six hundred eighty-six".