204429929185 has 16 divisors (see below), whose sum is σ = 250057725120. Its totient is φ = 160411089600.

The previous prime is 204429929159. The next prime is 204429929189. The reversal of 204429929185 is 581929924402.

It is not a de Polignac number, because 204429929185 - 2⁹ = 204429928673 is a prime.

It is a super-2 number, since 2×204429929185² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204429929189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1714266 + ... + 1829635.

It is an arithmetic number, because the mean of its divisors is an integer number (15628607820).

Almost surely, 2^204429929185 is an apocalyptic number.

It is an amenable number.

204429929185 is a deficient number, since it is larger than the sum of its proper divisors (45627795935).

204429929185 is a wasteful number, since it uses less digits than its factorization.

204429929185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544128.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 204429929185 in words is "two hundred four billion, four hundred twenty-nine million, nine hundred twenty-nine thousand, one hundred eighty-five".