204254767879 has 4 divisors (see below), whose sum is σ = 215005018840. Its totient is φ = 193504516920.

The previous prime is 204254767823. The next prime is 204254767903. The reversal of 204254767879 is 978767452402.

204254767879 is digitally balanced in base 2, 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: 978767452402 = 2 ⋅489383726201.

It is a cyclic number.

It is not a de Polignac number, because 204254767879 - 2⁷ = 204254767751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204254767579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5375125452 + ... + 5375125489.

It is an arithmetic number, because the mean of its divisors is an integer number (53751254710).

Almost surely, 2^204254767879 is an apocalyptic number.

204254767879 is a deficient number, since it is larger than the sum of its proper divisors (10750250961).

204254767879 is a wasteful number, since it uses less digits than its factorization.

204254767879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10750250960.

The product of its (nonzero) digits is 47416320, while the sum is 61.

The spelling of 204254767879 in words is "two hundred four billion, two hundred fifty-four million, seven hundred sixty-seven thousand, eight hundred seventy-nine".