204635884131 has 12 divisors (see below), whose sum is σ = 337811618352. Its totient is φ = 116934790896.

The previous prime is 204635884093. The next prime is 204635884139. The reversal of 204635884131 is 131488536402.

204635884131 is a `hidden beast` number, since 2 + 0 + 4 + 63 + 588 + 4 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 204635884131 - 2⁶ = 204635884067 is a prime.

It is a super-2 number, since 2×204635884131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204635884139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1624094256 + ... + 1624094381.

It is an arithmetic number, because the mean of its divisors is an integer number (28150968196).

Almost surely, 2^204635884131 is an apocalyptic number.

204635884131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

204635884131 is a deficient number, since it is larger than the sum of its proper divisors (133175734221).

204635884131 is a wasteful number, since it uses less digits than its factorization.

204635884131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248188650 (or 3248188647 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 204635884131 in words is "two hundred four billion, six hundred thirty-five million, eight hundred eighty-four thousand, one hundred thirty-one".