204233129990 has 16 divisors (see below), whose sum is σ = 367684310448. Its totient is φ = 81678879456.

The previous prime is 204233129977. The next prime is 204233130007. The reversal of 204233129990 is 99921332402.

It is a super-2 number, since 2×204233129990² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1736792 + ... + 1850651.

It is an arithmetic number, because the mean of its divisors is an integer number (22980269403).

Almost surely, 2^204233129990 is an apocalyptic number.

204233129990 is a deficient number, since it is larger than the sum of its proper divisors (163451180458).

204233129990 is a wasteful number, since it uses less digits than its factorization.

204233129990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593143.

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 204233129990 in words is "two hundred four billion, two hundred thirty-three million, one hundred twenty-nine thousand, nine hundred ninety".