505365666113 has 24 divisors (see below), whose sum is σ = 635674542720. Its totient is φ = 393273460800.

The previous prime is 505365666109. The next prime is 505365666131. The reversal of 505365666113 is 311666563505.

It is a happy number.

It is not a de Polignac number, because 505365666113 - 2² = 505365666109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505365666133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252548 + ... + 1036586.

It is an arithmetic number, because the mean of its divisors is an integer number (26486439280).

Almost surely, 2^505365666113 is an apocalyptic number.

It is an amenable number.

505365666113 is a deficient number, since it is larger than the sum of its proper divisors (130308876607).

505365666113 is a wasteful number, since it uses less digits than its factorization.

505365666113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784829 (or 784818 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 47.

The spelling of 505365666113 in words is "five hundred five billion, three hundred sixty-five million, six hundred sixty-six thousand, one hundred thirteen".