206405043000 has 128 divisors (see below), whose sum is σ = 693521075520. Its totient is φ = 50807385600.

The previous prime is 206405042971. The next prime is 206405043037. The reversal of 206405043000 is 340504602.

206405043000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2607219 + ... + 2685218.

Almost surely, 2^206405043000 is an apocalyptic number.

206405043000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206405043000 is an abundant number, since it is smaller than the sum of its proper divisors (487116032520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206405043000 is a wasteful number, since it uses less digits than its factorization.

206405043000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5292474 (or 5292460 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 206405043000 its reverse (340504602), we get a palindrome (206745547602).

The spelling of 206405043000 in words is "two hundred six billion, four hundred five million, forty-three thousand".