505165394115 has 12 divisors (see below), whose sum is σ = 875620016544. Its totient is φ = 269421543504.

The previous prime is 505165394113. The next prime is 505165394183. The reversal of 505165394115 is 511493561505.

505165394115 is a `hidden beast` number, since 50 + 5 + 16 + 539 + 41 + 15 = 666.

It is not a de Polignac number, because 505165394115 - 2¹ = 505165394113 is a prime.

It is a super-2 number, since 2×505165394115² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 11225897647 = 505165394115 / (5 + 0 + 5 + 1 + 6 + 5 + 3 + 9 + 4 + 1 + 1 + 5).

It is not an unprimeable number, because it can be changed into a prime (505165394113) 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 11 ways as a sum of consecutive naturals, for example, 5612948779 + ... + 5612948868.

It is an arithmetic number, because the mean of its divisors is an integer number (72968334712).

Almost surely, 2^505165394115 is an apocalyptic number.

505165394115 is a deficient number, since it is larger than the sum of its proper divisors (370454622429).

505165394115 is a wasteful number, since it uses less digits than its factorization.

505165394115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11225897658 (or 11225897655 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 45.

The spelling of 505165394115 in words is "five hundred five billion, one hundred sixty-five million, three hundred ninety-four thousand, one hundred fifteen".