206999206824 has 32 divisors (see below), whose sum is σ = 544734756000. Its totient is φ = 65368170432.

The previous prime is 206999206819. The next prime is 206999206831. The reversal of 206999206824 is 428602999602.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 226972359 + ... + 226973270.

It is an arithmetic number, because the mean of its divisors is an integer number (17022961125).

Almost surely, 2^206999206824 is an apocalyptic number.

206999206824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

206999206824 is an abundant number, since it is smaller than the sum of its proper divisors (337735549176).

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

206999206824 is a wasteful number, since it uses less digits than its factorization.

206999206824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453945657 (or 453945653 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 206999206824 in words is "two hundred six billion, nine hundred ninety-nine million, two hundred six thousand, eight hundred twenty-four".