204088315356818 has 4 divisors (see below), whose sum is σ = 306132473035230. Its totient is φ = 102044157678408.

The previous prime is 204088315356713. The next prime is 204088315356923. The reversal of 204088315356818 is 818653513880402.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (204088315356713) and next prime (204088315356923).

It can be written as a sum of positive squares in only one way, i.e., 138253315385689 + 65834999971129 = 11758117^2 + 8113877^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51022078839203 + ... + 51022078839206.

Almost surely, 2^{204088315356818} is an apocalyptic number.

204088315356818 is a deficient number, since it is larger than the sum of its proper divisors (102044157678412).

204088315356818 is a wasteful number, since it uses less digits than its factorization.

204088315356818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102044157678411.

The product of its (nonzero) digits is 44236800, while the sum is 62.

The spelling of 204088315356818 in words is "two hundred four trillion, eighty-eight billion, three hundred fifteen million, three hundred fifty-six thousand, eight hundred eighteen".