204541556188 has 12 divisors (see below), whose sum is σ = 365563632672. Its totient is φ = 100094804000.

The previous prime is 204541556173. The next prime is 204541556201. The reversal of 204541556188 is 881655145402.

It is a super-2 number, since 2×204541556188² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 543993313 + ... + 543993688.

It is an arithmetic number, because the mean of its divisors is an integer number (30463636056).

Almost surely, 2^204541556188 is an apocalyptic number.

It is an amenable number.

204541556188 is a deficient number, since it is larger than the sum of its proper divisors (161022076484).

204541556188 is a wasteful number, since it uses less digits than its factorization.

204541556188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087987052 (or 1087987050 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 49.

The spelling of 204541556188 in words is "two hundred four billion, five hundred forty-one million, five hundred fifty-six thousand, one hundred eighty-eight".