209300000000 has 648 divisors, whose sum is σ = 670687156608. Its totient is φ = 63360000000.

The previous prime is 209299999969. The next prime is 209300000011. The reversal of 209300000000 is 3902.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 9099999989 + ... + 9100000011.

Almost surely, 2^209300000000 is an apocalyptic number.

209300000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 209300000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335343578304).

209300000000 is an abundant number, since it is smaller than the sum of its proper divisors (461387156608).

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

209300000000 is an frugal number, since it uses more digits than its factorization.

209300000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 209300000000 its reverse (3902), we get a palindrome (209300003902).

The spelling of 209300000000 in words is "two hundred nine billion, three hundred million", and thus it is an aban number.