204115531202163 has 32 divisors (see below), whose sum is σ = 345720955443200. Its totient is φ = 116594070340608.

The previous prime is 204115531202137. The next prime is 204115531202183. The reversal of 204115531202163 is 361202135511402.

204115531202163 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 1 + 553 + 1 + 20 + 21 + 63 = 666.

It is not a de Polignac number, because 204115531202163 - 2¹³ = 204115531193971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204115531202183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200305531 + ... + 201321972.

It is an arithmetic number, because the mean of its divisors is an integer number (10803779857600).

Almost surely, 2^{204115531202163} is an apocalyptic number.

204115531202163 is a deficient number, since it is larger than the sum of its proper divisors (141605424241037).

204115531202163 is a wasteful number, since it uses less digits than its factorization.

204115531202163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401630208 (or 401630202 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 204115531202163 its reverse (361202135511402), we get a palindrome (565317666713565).

The spelling of 204115531202163 in words is "two hundred four trillion, one hundred fifteen billion, five hundred thirty-one million, two hundred two thousand, one hundred sixty-three".