209593936704 has 224 divisors, whose sum is σ = 580542318720. Its totient is φ = 66672156672.

The previous prime is 209593936693. The next prime is 209593936709. The reversal of 209593936704 is 407639395902.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209593936709) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128034574 + ... + 128036210.

It is an arithmetic number, because the mean of its divisors is an integer number (2591706780).

Almost surely, 2^209593936704 is an apocalyptic number.

209593936704 is a gapful number since it is divisible by the number (24) 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 209593936704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290271159360).

209593936704 is an abundant number, since it is smaller than the sum of its proper divisors (370948382016).

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

209593936704 is a wasteful number, since it uses less digits than its factorization.

209593936704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025 (or 2015 counting only the distinct ones).

The product of its (nonzero) digits is 11022480, while the sum is 57.

The spelling of 209593936704 in words is "two hundred nine billion, five hundred ninety-three million, nine hundred thirty-six thousand, seven hundred four".