204550963155 has 192 divisors, whose sum is σ = 451305354240. Its totient is φ = 83233612800.

The previous prime is 204550963129. The next prime is 204550963159. The reversal of 204550963155 is 551369055402.

204550963155 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 5 + 0 + 9 + 631 + 5 + 5 = 666.

It is not a de Polignac number, because 204550963155 - 2¹⁰ = 204550962131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 204550963155.

It is not an unprimeable number, because it can be changed into a prime (204550963159) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 130203520 + ... + 130205090.

It is an arithmetic number, because the mean of its divisors is an integer number (2350548720).

Almost surely, 2^204550963155 is an apocalyptic number.

204550963155 is an abundant number, since it is smaller than the sum of its proper divisors (246754391085).

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

204550963155 is a wasteful number, since it uses less digits than its factorization.

204550963155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2359 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 204550963155 in words is "two hundred four billion, five hundred fifty million, nine hundred sixty-three thousand, one hundred fifty-five".