12278433089838 has 16 divisors (see below), whose sum is σ = 24959437757136. Its totient is φ = 4025715767040.

The previous prime is 12278433089831. The next prime is 12278433089929. The reversal of 12278433089838 is 83898033487221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12278433089831) 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, 16773815331 + ... + 16773816062.

It is an arithmetic number, because the mean of its divisors is an integer number (1559964859821).

Almost surely, 2^{12278433089838} is an apocalyptic number.

12278433089838 is an abundant number, since it is smaller than the sum of its proper divisors (12681004667298).

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

12278433089838 is a wasteful number, since it uses less digits than its factorization.

12278433089838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33547631459.

The product of its (nonzero) digits is 111476736, while the sum is 66.

The spelling of 12278433089838 in words is "twelve trillion, two hundred seventy-eight billion, four hundred thirty-three million, eighty-nine thousand, eight hundred thirty-eight".