204552553155 has 16 divisors (see below), whose sum is σ = 333459257760. Its totient is φ = 107036304128.

The previous prime is 204552553151. The next prime is 204552553211. The reversal of 204552553155 is 551355255402.

It is a cyclic number.

It is not a de Polignac number, because 204552553155 - 2² = 204552553151 is a prime.

It is a super-3 number, since 3×204552553155³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (204552553151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128648610 + ... + 128650199.

It is an arithmetic number, because the mean of its divisors is an integer number (20841203610).

Almost surely, 2^204552553155 is an apocalyptic number.

204552553155 is a deficient number, since it is larger than the sum of its proper divisors (128906704605).

204552553155 is a wasteful number, since it uses less digits than its factorization.

204552553155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257298870.

The product of its (nonzero) digits is 750000, while the sum is 42.

The spelling of 204552553155 in words is "two hundred four billion, five hundred fifty-two million, five hundred fifty-three thousand, one hundred fifty-five".