500056561665 has 32 divisors (see below), whose sum is σ = 889236092160. Its totient is φ = 266622838272.

The previous prime is 500056561663. The next prime is 500056561673. The reversal of 500056561665 is 566165650005.

It is not a de Polignac number, because 500056561665 - 2¹ = 500056561663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 500056561665.

It is not an unprimeable number, because it can be changed into a prime (500056561661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23749 + ... + 1000338.

It is an arithmetic number, because the mean of its divisors is an integer number (27788627880).

Almost surely, 2^500056561665 is an apocalyptic number.

It is an amenable number.

500056561665 is a deficient number, since it is larger than the sum of its proper divisors (389179530495).

500056561665 is a wasteful number, since it uses less digits than its factorization.

500056561665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027718 (or 1027712 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 500056561665 in words is "five hundred billion, fifty-six million, five hundred sixty-one thousand, six hundred sixty-five".