204324005545155 has 36 divisors (see below), whose sum is σ = 376220118192672. Its totient is φ = 102562638071040.

The previous prime is 204324005545073. The next prime is 204324005545157. The reversal of 204324005545155 is 551545500423402.

204324005545155 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 2 + 40 + 0 + 554 + 5 + 1 + 55 = 666.

It is not a de Polignac number, because 204324005545155 - 2⁸ = 204324005544899 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 204324005545155.

It is not an unprimeable number, because it can be changed into a prime (204324005545157) 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 35 ways as a sum of consecutive naturals, for example, 7855581211 + ... + 7855607220.

Almost surely, 2^{204324005545155} is an apocalyptic number.

204324005545155 is a deficient number, since it is larger than the sum of its proper divisors (171896112647517).

204324005545155 is a wasteful number, since it uses less digits than its factorization.

204324005545155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15711188476 (or 15711188456 counting only the distinct ones).

The product of its (nonzero) digits is 2400000, while the sum is 45.

Adding to 204324005545155 its reverse (551545500423402), we get a palindrome (755869505968557).

The spelling of 204324005545155 in words is "two hundred four trillion, three hundred twenty-four billion, five million, five hundred forty-five thousand, one hundred fifty-five".