27685608205542 has 24 divisors (see below), whose sum is σ = 64411415009496. Its totient is φ = 7910173772928.

The previous prime is 27685608205523. The next prime is 27685608205583. The reversal of 27685608205542 is 24550280658672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47084367403 + ... + 47084367990.

It is an arithmetic number, because the mean of its divisors is an integer number (2683808958729).

Almost surely, 2^{27685608205542} is an apocalyptic number.

27685608205542 is an abundant number, since it is smaller than the sum of its proper divisors (36725806803954).

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

27685608205542 is a wasteful number, since it uses less digits than its factorization.

27685608205542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94168735412 (or 94168735405 counting only the distinct ones).

The product of its (nonzero) digits is 64512000, while the sum is 60.

The spelling of 27685608205542 in words is "twenty-seven trillion, six hundred eighty-five billion, six hundred eight million, two hundred five thousand, five hundred forty-two".