204416128874 has 4 divisors (see below), whose sum is σ = 306624193314. Its totient is φ = 102208064436.

The previous prime is 204416128831. The next prime is 204416128901. The reversal of 204416128874 is 478821614402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 478821614402 = 2 ⋅239410807201.

It can be written as a sum of positive squares in only one way, i.e., 188219748649 + 16196380225 = 433843^2 + 127265^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51104032217 + ... + 51104032220.

Almost surely, 2^204416128874 is an apocalyptic number.

204416128874 is a deficient number, since it is larger than the sum of its proper divisors (102208064440).

204416128874 is a wasteful number, since it uses less digits than its factorization.

204416128874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102208064439.

The product of its (nonzero) digits is 688128, while the sum is 47.

The spelling of 204416128874 in words is "two hundred four billion, four hundred sixteen million, one hundred twenty-eight thousand, eight hundred seventy-four".