204108387698 has 24 divisors (see below), whose sum is σ = 320104215900. Its totient is φ = 97601360384.

The previous prime is 204108387697. The next prime is 204108387701. The reversal of 204108387698 is 896783801402.

It can be written as a sum of positive squares in 2 ways, for example, as 201750993889 + 2357393809 = 449167^2 + 48553^2 .

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 11 ways as a sum of consecutive naturals, for example, 9097118 + ... + 9119526.

Almost surely, 2^204108387698 is an apocalyptic number.

204108387698 is a deficient number, since it is larger than the sum of its proper divisors (115995828202).

204108387698 is a wasteful number, since it uses less digits than its factorization.

204108387698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31066 (or 31043 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 204108387698 in words is "two hundred four billion, one hundred eight million, three hundred eighty-seven thousand, six hundred ninety-eight".