204545502218 has 4 divisors (see below), whose sum is σ = 306818253330. Its totient is φ = 102272751108.

The previous prime is 204545502211. The next prime is 204545502251. The reversal of 204545502218 is 812205545402.

204545502218 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 812205545402 = 2 ⋅406102772701.

It can be written as a sum of positive squares in only one way, i.e., 169395626929 + 35149875289 = 411577^2 + 187483^2 .

It is a super-2 number, since 2×204545502218² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204545502211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51136375553 + ... + 51136375556.

Almost surely, 2^204545502218 is an apocalyptic number.

204545502218 is a deficient number, since it is larger than the sum of its proper divisors (102272751112).

204545502218 is a wasteful number, since it uses less digits than its factorization.

204545502218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102272751111.

The product of its (nonzero) digits is 128000, while the sum is 38.

The spelling of 204545502218 in words is "two hundred four billion, five hundred forty-five million, five hundred two thousand, two hundred eighteen".