206989499522 has 48 divisors (see below), whose sum is σ = 337841072640.
Its totient is φ = 95069871936.
The previous prime is 206989499491. The next prime is 206989499531. The reversal of 206989499522 is 225994989602.
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 23 ways as a sum of consecutive naturals, for example, 71894879 + ... + 71897757.
It is an arithmetic number, because the mean of its divisors is an integer number (7038355680).
Almost surely, 2206989499522 is an apocalyptic number.
206989499522 is a deficient number, since it is larger than the sum of its proper divisors (130851573118).
206989499522 is a wasteful number, since it uses less digits than its factorization.
206989499522 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3867 (or 3854 counting only the distinct ones).
The product of its (nonzero) digits is 50388480, while the sum is 65.
The spelling of 206989499522 in words is "two hundred six billion, nine hundred eighty-nine million, four hundred ninety-nine thousand, five hundred twenty-two".