204153556688 has 20 divisors (see below), whose sum is σ = 395559371940. Its totient is φ = 102073718784.

The previous prime is 204153556687. The next prime is 204153556721. The reversal of 204153556688 is 886655351402.

It can be written as a sum of positive squares in 2 ways, for example, as 99545298064 + 104608258624 = 315508^2 + 323432^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204153556687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418106 + ... + 763622.

It is an arithmetic number, because the mean of its divisors is an integer number (19777968597).

Almost surely, 2^204153556688 is an apocalyptic number.

It is an amenable number.

204153556688 is a deficient number, since it is larger than the sum of its proper divisors (191405815252).

204153556688 is a wasteful number, since it uses less digits than its factorization.

204153556688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382454 (or 382448 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 53.

The spelling of 204153556688 in words is "two hundred four billion, one hundred fifty-three million, five hundred fifty-six thousand, six hundred eighty-eight".