204550155800 has 48 divisors (see below), whose sum is σ = 482677339560. Its totient is φ = 80598862080.

The previous prime is 204550155737. The next prime is 204550155809. The reversal of 204550155800 is 8551055402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204550155809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7619069 + ... + 7645868.

Almost surely, 2^204550155800 is an apocalyptic number.

204550155800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204550155800 is an abundant number, since it is smaller than the sum of its proper divisors (278127183760).

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

204550155800 is a wasteful number, since it uses less digits than its factorization.

204550155800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15265020 (or 15265011 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 204550155800 in words is "two hundred four billion, five hundred fifty million, one hundred fifty-five thousand, eight hundred".