204138253784 has 32 divisors (see below), whose sum is σ = 383168756880. Its totient is φ = 101959993344.

The previous prime is 204138253771. The next prime is 204138253831. The reversal of 204138253784 is 487352831402.

204138253784 is digitally balanced in base 3, 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43832384 + ... + 43837040.

Almost surely, 2^204138253784 is an apocalyptic number.

It is an amenable number.

204138253784 is a deficient number, since it is larger than the sum of its proper divisors (179030503096).

204138253784 is a wasteful number, since it uses less digits than its factorization.

204138253784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9347 (or 9343 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 204138253784 in words is "two hundred four billion, one hundred thirty-eight million, two hundred fifty-three thousand, seven hundred eighty-four".