209041311612 has 48 divisors (see below), whose sum is σ = 558204157952. Its totient is φ = 59644589760.

The previous prime is 209041311601. The next prime is 209041311637. The reversal of 209041311612 is 216113140902.

209041311612 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 209041311612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1635964 + ... + 1759107.

Almost surely, 2^209041311612 is an apocalyptic number.

It is an amenable number.

209041311612 is an abundant number, since it is smaller than the sum of its proper divisors (349162846340).

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

209041311612 is a wasteful number, since it uses less digits than its factorization.

209041311612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395818 (or 3395816 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 209041311612 in words is "two hundred nine billion, forty-one million, three hundred eleven thousand, six hundred twelve".