27745676178 has 16 divisors (see below), whose sum is σ = 60536020896. Its totient is φ = 8407780640.

The previous prime is 27745676173. The next prime is 27745676221. The reversal of 27745676178 is 87167654772.

It is not an unprimeable number, because it can be changed into a prime (27745676173) by changing a digit.

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, 210194451 + ... + 210194582.

It is an arithmetic number, because the mean of its divisors is an integer number (3783501306).

Almost surely, 2^27745676178 is an apocalyptic number.

27745676178 is an abundant number, since it is smaller than the sum of its proper divisors (32790344718).

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

27745676178 is a wasteful number, since it uses less digits than its factorization.

27745676178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420389049.

The product of its digits is 27659520, while the sum is 60.

The spelling of 27745676178 in words is "twenty-seven billion, seven hundred forty-five million, six hundred seventy-six thousand, one hundred seventy-eight".