27838399166 has 16 divisors (see below), whose sum is σ = 42490684080. Its totient is φ = 13675119360.

The previous prime is 27838399129. The next prime is 27838399189. The reversal of 27838399166 is 66199383872.

It is a junction number, because it is equal to n+sod(n) for n = 27838399099 and 27838399108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130736 + ... + 269756.

It is an arithmetic number, because the mean of its divisors is an integer number (2655667755).

Almost surely, 2^27838399166 is an apocalyptic number.

27838399166 is a deficient number, since it is larger than the sum of its proper divisors (14652284914).

27838399166 is a wasteful number, since it uses less digits than its factorization.

27838399166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140779.

The product of its digits is 23514624, while the sum is 62.

The spelling of 27838399166 in words is "twenty-seven billion, eight hundred thirty-eight million, three hundred ninety-nine thousand, one hundred sixty-six".