503640830205 has 12 divisors (see below), whose sum is σ = 872977439100. Its totient is φ = 268608442752.

The previous prime is 503640830197. The next prime is 503640830227. The reversal of 503640830205 is 502038046305.

It is a happy number.

503640830205 is a `hidden beast` number, since 5 + 0 + 3 + 640 + 8 + 3 + 0 + 2 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 238692827844 + 264948002361 = 488562^2 + 514731^2 .

It is not a de Polignac number, because 503640830205 - 2³ = 503640830197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 503640830205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5596009180 + ... + 5596009269.

It is an arithmetic number, because the mean of its divisors is an integer number (72748119925).

Almost surely, 2^503640830205 is an apocalyptic number.

It is an amenable number.

503640830205 is a deficient number, since it is larger than the sum of its proper divisors (369336608895).

503640830205 is a wasteful number, since it uses less digits than its factorization.

503640830205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192018460 (or 11192018457 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 503640830205 in words is "five hundred three billion, six hundred forty million, eight hundred thirty thousand, two hundred five".