8128478011838 has 8 divisors (see below), whose sum is σ = 12834438966120. Its totient is φ = 3850331689800.

The previous prime is 8128478011837. The next prime is 8128478011883. The reversal of 8128478011838 is 8381108748218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8128478011837) 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 3 ways as a sum of consecutive naturals, for example, 106953658013 + ... + 106953658088.

It is an arithmetic number, because the mean of its divisors is an integer number (1604304870765).

Almost surely, 2^{8128478011838} is an apocalyptic number.

8128478011838 is a deficient number, since it is larger than the sum of its proper divisors (4705960954282).

8128478011838 is a wasteful number, since it uses less digits than its factorization.

8128478011838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213907316122.

The product of its (nonzero) digits is 5505024, while the sum is 59.

The spelling of 8128478011838 in words is "eight trillion, one hundred twenty-eight billion, four hundred seventy-eight million, eleven thousand, eight hundred thirty-eight".