204878781022 has 16 divisors (see below), whose sum is σ = 323673742800. Its totient is φ = 96993564480.

The previous prime is 204878781011. The next prime is 204878781089. The reversal of 204878781022 is 220187878402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1438879 + ... + 1574842.

It is an arithmetic number, because the mean of its divisors is an integer number (20229608925).

Almost surely, 2^204878781022 is an apocalyptic number.

204878781022 is a deficient number, since it is larger than the sum of its proper divisors (118794961778).

204878781022 is a wasteful number, since it uses less digits than its factorization.

204878781022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3015531.

The product of its (nonzero) digits is 802816, while the sum is 49.

The spelling of 204878781022 in words is "two hundred four billion, eight hundred seventy-eight million, seven hundred eighty-one thousand, twenty-two".