206866807400 has 48 divisors (see below), whose sum is σ = 524689453440. Its totient is φ = 75224292800.

The previous prime is 206866807397. The next prime is 206866807421. The reversal of 206866807400 is 4708668602.

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 11 ways as a sum of consecutive naturals, for example, 47012984 + ... + 47017383.

It is an arithmetic number, because the mean of its divisors is an integer number (10931030280).

Almost surely, 2^206866807400 is an apocalyptic number.

206866807400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206866807400 is an abundant number, since it is smaller than the sum of its proper divisors (317822646040).

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

206866807400 is a wasteful number, since it uses less digits than its factorization.

206866807400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94030394 (or 94030385 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 206866807400 in words is "two hundred six billion, eight hundred sixty-six million, eight hundred seven thousand, four hundred".