204798798873 has 28 divisors (see below), whose sum is σ = 325119971988. Its totient is φ = 128501199360.

The previous prime is 204798798851. The next prime is 204798798881. The reversal of 204798798873 is 378897897402.

204798798873 is a `hidden beast` number, since 2 + 0 + 479 + 8 + 7 + 9 + 88 + 73 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 159486013449 + 45312785424 = 399357^2 + 212868^2 .

It is not a de Polignac number, because 204798798873 - 2¹⁸ = 204798536729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204798798803) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 8250288 + ... + 8275073.

It is an arithmetic number, because the mean of its divisors is an integer number (11611427571).

Almost surely, 2^204798798873 is an apocalyptic number.

It is an amenable number.

204798798873 is a deficient number, since it is larger than the sum of its proper divisors (120321173115).

204798798873 is an equidigital number, since it uses as much as digits as its factorization.

204798798873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16525396 (or 16525381 counting only the distinct ones).

The product of its (nonzero) digits is 341397504, while the sum is 72.

The spelling of 204798798873 in words is "two hundred four billion, seven hundred ninety-eight million, seven hundred ninety-eight thousand, eight hundred seventy-three".