204770989101 has 32 divisors (see below), whose sum is σ = 328755927040. Its totient is φ = 110751810624.

The previous prime is 204770989091. The next prime is 204770989147. The reversal of 204770989101 is 101989077402.

It is not a de Polignac number, because 204770989101 - 2⁷ = 204770988973 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 (204770985101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201336 + ... + 670878.

It is an arithmetic number, because the mean of its divisors is an integer number (10273622720).

Almost surely, 2^204770989101 is an apocalyptic number.

204770989101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

204770989101 is a deficient number, since it is larger than the sum of its proper divisors (123984937939).

204770989101 is a wasteful number, since it uses less digits than its factorization.

204770989101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470665.

The product of its (nonzero) digits is 254016, while the sum is 48.

The spelling of 204770989101 in words is "two hundred four billion, seven hundred seventy million, nine hundred eighty-nine thousand, one hundred one".