53778768228 has 18 divisors (see below), whose sum is σ = 135940775334. Its totient is φ = 17926256064.

The previous prime is 53778768221. The next prime is 53778768229. The reversal of 53778768228 is 82286787735.

53778768228 is a `hidden beast` number, since 537 + 7 + 8 + 76 + 8 + 2 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 53727531264 + 51236964 = 231792^2 + 7158^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (53778768221) 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 5 ways as a sum of consecutive naturals, for example, 746927301 + ... + 746927372.

Almost surely, 2^53778768228 is an apocalyptic number.

It is an amenable number.

53778768228 is an abundant number, since it is smaller than the sum of its proper divisors (82162007106).

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

53778768228 is a wasteful number, since it uses less digits than its factorization.

53778768228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493854683 (or 1493854678 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 63.

The spelling of 53778768228 in words is "fifty-three billion, seven hundred seventy-eight million, seven hundred sixty-eight thousand, two hundred twenty-eight".