204231577788 has 72 divisors (see below), whose sum is σ = 601134494688. Its totient is φ = 57250896768.

The previous prime is 204231577769. The next prime is 204231577817. The reversal of 204231577788 is 887775132402.

204231577788 is a `hidden beast` number, since 20 + 42 + 3 + 1 + 577 + 7 + 8 + 8 = 666.

204231577788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7632331 + ... + 7659042.

It is an arithmetic number, because the mean of its divisors is an integer number (8349090204).

Almost surely, 2^204231577788 is an apocalyptic number.

204231577788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

204231577788 is an abundant number, since it is smaller than the sum of its proper divisors (396902916900).

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

204231577788 is a wasteful number, since it uses less digits than its factorization.

204231577788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15291443 (or 15291438 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 54.

The spelling of 204231577788 in words is "two hundred four billion, two hundred thirty-one million, five hundred seventy-seven thousand, seven hundred eighty-eight".