209372329852 has 48 divisors (see below), whose sum is σ = 441947296000. Its totient is φ = 84783936384.

The previous prime is 209372329843. The next prime is 209372329879. The reversal of 209372329852 is 258923273902.

It is a self number, because there is not a number n which added to its sum of digits gives 209372329852.

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, 317577 + ... + 720832.

Almost surely, 2^209372329852 is an apocalyptic number.

It is an amenable number.

209372329852 is an abundant number, since it is smaller than the sum of its proper divisors (232574966148).

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

209372329852 is a wasteful number, since it uses less digits than its factorization.

209372329852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038818 (or 1038816 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 209372329852 in words is "two hundred nine billion, three hundred seventy-two million, three hundred twenty-nine thousand, eight hundred fifty-two".