65555048538 has 48 divisors (see below), whose sum is σ = 162520525440. Its totient is φ = 18707659488.

The previous prime is 65555048527. The next prime is 65555048557. The reversal of 65555048538 is 83584055556.

65555048538 is a `hidden beast` number, since 6 + 5 + 5 + 550 + 4 + 85 + 3 + 8 = 666.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 204345 + ... + 415772.

It is an arithmetic number, because the mean of its divisors is an integer number (3385844280).

Almost surely, 2^65555048538 is an apocalyptic number.

65555048538 is an abundant number, since it is smaller than the sum of its proper divisors (96965476902).

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

65555048538 is a wasteful number, since it uses less digits than its factorization.

65555048538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620971 (or 620968 counting only the distinct ones).

The product of its (nonzero) digits is 14400000, while the sum is 54.

The spelling of 65555048538 in words is "sixty-five billion, five hundred fifty-five million, forty-eight thousand, five hundred thirty-eight".