505011666068 has 72 divisors (see below), whose sum is σ = 1165411648800. Its totient is φ = 189269825472.

The previous prime is 505011666067. The next prime is 505011666077. The reversal of 505011666068 is 860666110505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505011666067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5167358 + ... + 5264181.

It is an arithmetic number, because the mean of its divisors is an integer number (16186272900).

Almost surely, 2^505011666068 is an apocalyptic number.

It is an amenable number.

505011666068 is an abundant number, since it is smaller than the sum of its proper divisors (660399982732).

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

505011666068 is a wasteful number, since it uses less digits than its factorization.

505011666068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10431589 (or 10431580 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 505011666068 in words is "five hundred five billion, eleven million, six hundred sixty-six thousand, sixty-eight".