204108387695 has 16 divisors (see below), whose sum is σ = 245576188800. Its totient is φ = 162856204800.

The previous prime is 204108387649. The next prime is 204108387697. The reversal of 204108387695 is 596783801402.

It is not a de Polignac number, because 204108387695 - 2²⁰ = 204107339119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204108387697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7703831 + ... + 7730279.

It is an arithmetic number, because the mean of its divisors is an integer number (15348511800).

It is a 2-persistent number, because it is pandigital, and so is 2⋅204108387695 = 408216775390, but 3⋅204108387695 = 612325163085 is not.

Almost surely, 2^204108387695 is an apocalyptic number.

204108387695 is a deficient number, since it is larger than the sum of its proper divisors (41467801105).

204108387695 is a wasteful number, since it uses less digits than its factorization.

204108387695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30466.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 204108387695 in words is "two hundred four billion, one hundred eight million, three hundred eighty-seven thousand, six hundred ninety-five".