204807586530413 has 4 divisors (see below), whose sum is σ = 204807619292988. Its totient is φ = 204807553767840.

The previous prime is 204807586530343. The next prime is 204807586530479. The reversal of 204807586530413 is 314035685708402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107897206220164 + 96910380310249 = 10387358^2 + 9844307^2 .

It is a cyclic number.

It is not a de Polignac number, because 204807586530413 - 2¹⁰ = 204807586529389 is a prime.

It is a super-2 number, since 2×204807586530413² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204807586530913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3766058 + ... + 20586363.

It is an arithmetic number, because the mean of its divisors is an integer number (51201904823247).

Almost surely, 2^{204807586530413} is an apocalyptic number.

It is an amenable number.

204807586530413 is a deficient number, since it is larger than the sum of its proper divisors (32762575).

204807586530413 is an equidigital number, since it uses as much as digits as its factorization.

204807586530413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32762574.

The product of its (nonzero) digits is 19353600, while the sum is 56.

The spelling of 204807586530413 in words is "two hundred four trillion, eight hundred seven billion, five hundred eighty-six million, five hundred thirty thousand, four hundred thirteen".