65138105488688 has 20 divisors (see below), whose sum is σ = 126222591066000. Its totient is φ = 32564533600704.

The previous prime is 65138105488657. The next prime is 65138105488711. The reversal of 65138105488688 is 88688450183156.

It is a happy number.

65138105488688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65138105488688² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282327563 + ... + 282558186.

It is an arithmetic number, because the mean of its divisors is an integer number (6311129553300).

Almost surely, 2^{65138105488688} is an apocalyptic number.

It is an amenable number.

65138105488688 is a deficient number, since it is larger than the sum of its proper divisors (61084485577312).

65138105488688 is a wasteful number, since it uses less digits than its factorization.

65138105488688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564892964 (or 564892958 counting only the distinct ones).

The product of its (nonzero) digits is 353894400, while the sum is 71.

The spelling of 65138105488688 in words is "sixty-five trillion, one hundred thirty-eight billion, one hundred five million, four hundred eighty-eight thousand, six hundred eighty-eight".