27778667216112 has 30 divisors (see below), whose sum is σ = 77741686723272. Its totient is φ = 9259555738656.

The previous prime is 27778667216087. The next prime is 27778667216149. The reversal of 27778667216112 is 21161276687772.

It is a happy number.

27778667216112 is a `hidden beast` number, since 2 + 7 + 7 + 7 + 8 + 6 + 6 + 7 + 2 + 1 + 611 + 2 = 666.

It is a super-2 number, since 2×27778667216112² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27778667216112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96453705468 + ... + 96453705755.

Almost surely, 2^{27778667216112} is an apocalyptic number.

It is an amenable number.

27778667216112 is an abundant number, since it is smaller than the sum of its proper divisors (49963019507160).

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

27778667216112 is a wasteful number, since it uses less digits than its factorization.

27778667216112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192907411237 (or 192907411228 counting only the distinct ones).

The product of its digits is 33191424, while the sum is 63.

The spelling of 27778667216112 in words is "twenty-seven trillion, seven hundred seventy-eight billion, six hundred sixty-seven million, two hundred sixteen thousand, one hundred twelve".