27905688884 has 12 divisors (see below), whose sum is σ = 48836433408. Its totient is φ = 13952422200.

The previous prime is 27905688869. The next prime is 27905688907. The reversal of 27905688884 is 48888650972.

It is a self number, because there is not a number n which added to its sum of digits gives 27905688884.

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 3 ways as a sum of consecutive naturals, for example, 78989 + ... + 249099.

It is an arithmetic number, because the mean of its divisors is an integer number (4069702784).

Almost surely, 2^27905688884 is an apocalyptic number.

It is an amenable number.

27905688884 is a deficient number, since it is larger than the sum of its proper divisors (20930744524).

27905688884 is a wasteful number, since it uses less digits than its factorization.

27905688884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211126 (or 211124 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 65.

The spelling of 27905688884 in words is "twenty-seven billion, nine hundred five million, six hundred eighty-eight thousand, eight hundred eighty-four".