209735449712 has 10 divisors (see below), whose sum is σ = 406362433848. Its totient is φ = 104867724848.

The previous prime is 209735449699. The next prime is 209735449727. The reversal of 209735449712 is 217944537902.

209735449712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6554232788 + ... + 6554232819.

Almost surely, 2^209735449712 is an apocalyptic number.

It is an amenable number.

209735449712 is a deficient number, since it is larger than the sum of its proper divisors (196626984136).

209735449712 is a wasteful number, since it uses less digits than its factorization.

209735449712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13108465615 (or 13108465609 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 209735449712 in words is "two hundred nine billion, seven hundred thirty-five million, four hundred forty-nine thousand, seven hundred twelve".