206989499524 has 24 divisors (see below), whose sum is σ = 368207336000. Its totient is φ = 101787749280.

The previous prime is 206989499491. The next prime is 206989499531. The reversal of 206989499524 is 425994989602.

It is a self number, because there is not a number n which added to its sum of digits gives 206989499524.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2719417 + ... + 2794495.

Almost surely, 2^206989499524 is an apocalyptic number.

It is an amenable number.

206989499524 is a deficient number, since it is larger than the sum of its proper divisors (161217836476).

206989499524 is a wasteful number, since it uses less digits than its factorization.

206989499524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86443 (or 86441 counting only the distinct ones).

The product of its (nonzero) digits is 100776960, while the sum is 67.

The spelling of 206989499524 in words is "two hundred six billion, nine hundred eighty-nine million, four hundred ninety-nine thousand, five hundred twenty-four".