27938139606 has 48 divisors (see below), whose sum is σ = 68023309536. Its totient is φ = 8222594688.

The previous prime is 27938139569. The next prime is 27938139617. The reversal of 27938139606 is 60693183972.

27938139606 is a `hidden beast` number, since 27 + 9 + 3 + 8 + 1 + 3 + 9 + 606 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2590135 + ... + 2600898.

It is an arithmetic number, because the mean of its divisors is an integer number (1417152282).

Almost surely, 2^27938139606 is an apocalyptic number.

27938139606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27938139606 is an abundant number, since it is smaller than the sum of its proper divisors (40085169930).

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

27938139606 is a wasteful number, since it uses less digits than its factorization.

27938139606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5191077 (or 5191074 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 27938139606 in words is "twenty-seven billion, nine hundred thirty-eight million, one hundred thirty-nine thousand, six hundred six".