505666061536 has 24 divisors (see below), whose sum is σ = 996432693984. Its totient is φ = 252603790080.

The previous prime is 505666061533. The next prime is 505666061591. The reversal of 505666061536 is 635160666505.

It is a self number, because there is not a number n which added to its sum of digits gives 505666061536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505666061533) 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 3 ways as a sum of consecutive naturals, for example, 7127925 + ... + 7198516.

It is an arithmetic number, because the mean of its divisors is an integer number (41518028916).

Almost surely, 2^505666061536 is an apocalyptic number.

It is an amenable number.

505666061536 is a deficient number, since it is larger than the sum of its proper divisors (490766632448).

505666061536 is a wasteful number, since it uses less digits than its factorization.

505666061536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14327554 (or 14327546 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 49.

The spelling of 505666061536 in words is "five hundred five billion, six hundred sixty-six million, sixty-one thousand, five hundred thirty-six".