209152550196 has 192 divisors, whose sum is σ = 586106357760. Its totient is φ = 64254228480.

The previous prime is 209152550161. The next prime is 209152550203. The reversal of 209152550196 is 691055251902.

209152550196 is a `hidden beast` number, since 2 + 0 + 9 + 1 + 5 + 2 + 550 + 1 + 96 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59064186 + ... + 59067726.

It is an arithmetic number, because the mean of its divisors is an integer number (3052637280).

Almost surely, 2^209152550196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 209152550196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293053178880).

209152550196 is an abundant number, since it is smaller than the sum of its proper divisors (376953807564).

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

209152550196 is a wasteful number, since it uses less digits than its factorization.

209152550196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4231 (or 4223 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 209152550196 in words is "two hundred nine billion, one hundred fifty-two million, five hundred fifty thousand, one hundred ninety-six".