27227978082 has 162 divisors, whose sum is σ = 65826603297. Its totient is φ = 8132059584.

The previous prime is 27227978081. The next prime is 27227978083. The reversal of 27227978082 is 28087972272.

It is an interprime number because it is at equal distance from previous prime (27227978081) and next prime (27227978083).

It can be written as a sum of positive squares in 2 ways, for example, as 24338808081 + 2889170001 = 156009^2 + 53751^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=116679.

It is not an unprimeable number, because it can be changed into a prime (27227978081) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 305932294 + ... + 305932382.

Almost surely, 2^27227978082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27227978082

27227978082 is an abundant number, since it is smaller than the sum of its proper divisors (38598625215).

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

27227978082 is a wasteful number, since it uses less digits than its factorization.

27227978082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 27227978082 in words is "twenty-seven billion, two hundred twenty-seven million, nine hundred seventy-eight thousand, eighty-two".