4138807521678 has 8 divisors (see below), whose sum is σ = 8277615043368. Its totient is φ = 1379602507224.

The previous prime is 4138807521671. The next prime is 4138807521703. The reversal of 4138807521678 is 8761257088314.

4138807521678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

4138807521678 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138807521671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344900626801 + ... + 344900626812.

It is an arithmetic number, because the mean of its divisors is an integer number (1034701880421).

Almost surely, 2^{4138807521678} is an apocalyptic number.

4138807521678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4138807521678 is a wasteful number, since it uses less digits than its factorization.

4138807521678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689801253618.

The product of its (nonzero) digits is 18063360, while the sum is 60.

The spelling of 4138807521678 in words is "four trillion, one hundred thirty-eight billion, eight hundred seven million, five hundred twenty-one thousand, six hundred seventy-eight".