500005601664 has 64 divisors (see below), whose sum is σ = 1359026898240. Its totient is φ = 162792516096.

The previous prime is 500005601663. The next prime is 500005601687. The reversal of 500005601664 is 466106500005.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500005601663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15124162 + ... + 15157185.

It is an arithmetic number, because the mean of its divisors is an integer number (21234795285).

Almost surely, 2^500005601664 is an apocalyptic number.

It is an amenable number.

500005601664 is an abundant number, since it is smaller than the sum of its proper divisors (859021296576).

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

500005601664 is a wasteful number, since it uses less digits than its factorization.

500005601664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30281407 (or 30281395 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 500005601664 in words is "five hundred billion, five million, six hundred one thousand, six hundred sixty-four".