4078635826838 has 16 divisors (see below), whose sum is σ = 6122213729280. Its totient is φ = 2037898082856.

The previous prime is 4078635826831. The next prime is 4078635826883. The reversal of 4078635826838 is 8386285368704.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4078635826831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68331395 + ... + 68391057.

It is an arithmetic number, because the mean of its divisors is an integer number (382638358080).

Almost surely, 2^{4078635826838} is an apocalyptic number.

4078635826838 is a deficient number, since it is larger than the sum of its proper divisors (2043577902442).

4078635826838 is a wasteful number, since it uses less digits than its factorization.

4078635826838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82891.

The product of its (nonzero) digits is 371589120, while the sum is 68.

The spelling of 4078635826838 in words is "four trillion, seventy-eight billion, six hundred thirty-five million, eight hundred twenty-six thousand, eight hundred thirty-eight".