227929965138 has 54 divisors (see below), whose sum is σ = 498226876407. Its totient is φ = 75308907960.

The previous prime is 227929965127. The next prime is 227929965139. The reversal of 227929965138 is 831569929722.

227929965138 is a `hidden beast` number, since 2 + 2 + 7 + 9 + 29 + 96 + 513 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 113964982569 + 113964982569 = 337587^2 + 337587^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=337587.

It is a super-3 number, since 3×227929965138³ (a number of 35 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (227929965139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 265342953 + ... + 265343811.

Almost surely, 2^227929965138 is an apocalyptic number.

227929965138 is an abundant number, since it is smaller than the sum of its proper divisors (270296911269).

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

227929965138 is an frugal number, since it uses more digits than its factorization.

227929965138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 995 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The spelling of 227929965138 in words is "two hundred twenty-seven billion, nine hundred twenty-nine million, nine hundred sixty-five thousand, one hundred thirty-eight".